- | Use the Search above right | Sort Columns By Clicking The Row Above | | | | | | | | | | | | |
Book | Les Causeries Scientifiques | | Henri De Parville | | | 1862 | | | | | https://gallica.bnf.fr/ark:/12148/bpt6k202698x# | FR | | Singing Flame, Pyrophone, Unverified |
Book | Sound | | John Tyndall | Flame | | 1867 | | Chap 6 | 260-301 | | https://www.gutenberg.org/files/54969/54969-h/54969-h.htm | UK | | Musical Flames |
Book | The Cyclopaedia of Electrical Engineering | Gebbib Publishing Co. | M. Slingo, Arthur Brooker, John Perry | Thermo | | 1895 | | Vol 2 | 785-793 | | http://duckduckgo.com/The Cyclopaedia of Electrical Engineering M. Slingo, Arthur Brooker, John Perry | | | Thermophone, electrostatic |
Book | The Electric Arc | Cambridge University Press | Hertha Ayrton | Arc | | 1902 | | | | | http://duckduckgo.com/The Electric Arc Hertha Ayrton | UK | | Earliest studies on the noise from arcs |
Book | Conduction of Electricity Through Gases | | J. J. Thomson | Arc Flame | | 1903 | | Chap 9, 13, 14 | 417, 430-431 | | http://duckduckgo.com/Conduction of Electricity Through Gases J. J. Thomson | UK | | Arc hiss, early arc and flame behaviour |
Book | Dielectric Phenomena in High Voltage Engineering | McGraw Hill | F.W.Peek | | | 1915 | | Chap 5 | | | http://duckduckgo.com/Dielectric Phenomena in High Voltage Engineering F.W.Peek | | | Behaviour of corona in detail |
Book | Electroacoustics the analysis of transduction, and its historical background | Cambridge | Hunt, Frederick V | | | 1954 | | | 5, 41, 49 | | http://duckduckgo.com/Electroacoustics the analysis of transduction, and its historical background Hunt, Frederick V | | | See home page for quote. A detailed book on acoustics that ignored any massless |
Book | Elements of Acoustical Engineering | Nostrand | Harry F. Olson | Corona | Full | 1957 | May | | 244-245 | | http://duckduckgo.com/Elements of Acoustical Engineering Harry F. Olson | US | | Ionophone |
Book | Hi-Fi Annual & Audio handbook | Ziff-Davis | | Corona | | 1958 | Jan | | | | http://duckduckgo.com/Hi-Fi Annual & Audio handbook | | | Ionic Cloud Tweeter |
Book | Acoustics and Vibrational Physics | Arnold | Stephens Bate | | | 1966 | | | 317 | | http://duckduckgo.com/Acoustics and Vibrational Physics Stephens Bate | | | Tombs corona wind |
Book | Theoretical Acoustics | McGraw Hill | Morse, Philip Mccord | | | 1968 | | Chap 12 | 781-808 | | http://duckduckgo.com/Theoretical Acoustics Morse, Philip Mccord | | | |
Book | Ionized Gases | Oxford, Clarendon Press | Alfred Von Engel | | | 1969 | | | 264 | | https://archive.org/details/ionizedgases0000vone/page/n9/mode/2up | | | Spark noise |
Book | Electroacoustics | Newnes-Butterworth | M. L. Gayford | Plasma | Tweeter | 1970 | | | 208 | | http://duckduckgo.com/Electroacoustics M. L. Gayford | | | Ionophone |
Book | Interaction of electric and hydrodynamic fields | Nauka | Ostroumov G A | Corona | | 1979 | | Chap 5 | 143-170 | | http://duckduckgo.com/Interaction of electric and hydrodynamic fields Ostroumov G A | RU | | |
Book | Loudspeaker Handbook | Springer Science | John Eargle | | | 2003 | | 2nd ed | 398-402 | | http://duckduckgo.com/Loudspeaker Handbook John Eargle | | | |
Book | Electroacoustics | CRC Press | Mendel Kleiner | | | 2013 | | | 487 | | http://duckduckgo.com/Electroacoustics Mendel Kleiner | | | Ionophones |
Book | The Age of Electroacoustics | MIT Press | Roland Wittje | | | 2016 | | Chap 2.5 | 58-66 | | https://archive.org/details/ageofelectroacou0000witt/page/n5/mode/2up | | | Early audio history with a war angle,excellent chapter |
Book | Newnes Audio and Hi-Fi Engineer's Pocket Book | Newnes | | | | 2016 | | | 170 | | http://duckduckgo.com/Newnes Audio and Hi-Fi Engineer's Pocket Book | | | Poor description of corona speaker |
Book | Cinema in Flux | Springer | L. Lipton | Plasma | Mic | 2021 | | | 263-267 | | https://link.springer.com/chapter/10.1007/978-1-0716-0951-4_30#citeas | US | | Kathodophone history, Tri-Ergon history |
Commercial | Kathodophone | | Hans Vogt, Josef Engl, Joseph Massolle | Plasma | Mic | 1918 | | | | | http://duckduckgo.com/Kathodophone Hans Vogt, Josef Engl, Joseph Massolle | DE | Lorenz for Tri-Ergon (1923) | Or Kathodofon - used for earliest film sound recording 1922, 500V 0.25mm gap |
Commercial | Ionophone | | Siegfried Klein | Plasma | Tweeter | 1954 | | | | | http://duckduckgo.com/Ionophone Siegfried Klein | UK | Plessey | The first Ionophone |
Commercial | Ionophone | | Siegfried Klein | Plasma | Tweeter | 1956 | | | | | http://duckduckgo.com/Ionophone Siegfried Klein | FR | Audax | A licensed Ionovac clone |
Commercial | Ionovac T-3500 | | Siegfried Klein | Plasma | Tweeter | 1958 | | | | | http://duckduckgo.com/Ionovac T-3500 Siegfried Klein | US | Electro-Voice | A licensed Ionovac clone |
Commercial | Ionovac | | Siegfried Klein | Plasma | Tweeter | 1961 | | | | | https://www.dukane.com/company/our-history | US | Dukane, Ionavac | Duk-5,10 - 60, Ionavac division,Ionofone |
Commercial | Ionofane, Ionofone | | Faulkus, Klein | Plasma | Tweeter | 1965 | | | | | http://duckduckgo.com/Ionofane, Ionofone Faulkus, Klein | UK | Fane Acoustics | A licensed Ionovac clone Fane 601 |
Commercial | P2H | | | Plasma | Tweeter | 1966 | | | | | https://www.worthpoint.com/worthopedia/w-bowers-wilkins-p2h-monitors-fane-251686354 | UK | Bowers & Wilkins | Used a Fane 601 tweeter P2, P2H |
Commercial | Plasmatronic | | Dr. Alan Hill, With Tony Salsich | Plasma | Tweeter | 1972 | | | | | http://hillplasmatronics.com/ | US | Hill | Well known, helium tank, handful made Type 1,Model 1-100-A |
Commercial | Ionofone | | Siegfried Klein | Plasma | Tweeter | 1974 | | | | | http://duckduckgo.com/Ionofone Siegfried Klein | DE | Tecnac | Later Klein clone |
Commercial | Model-1A, Reference | | Norbert Schafer | Plasma | Tweeter | 1975 | | | | | https://web.archive.org/web/20220328120123/http://www.plasmatweeter.de/phonogen.htm | DE | Phonogen | Used bought in early (audiotrade) Acapella Ion Tweeter, or Ionovac |
Commercial | MP | | Siegfried Klein | Plasma | Tweeter | 1978 | | | | | http://duckduckgo.com/MP Siegfried Klein | DE | Magnat | Well known -01,02m, Transpuls,MP-X-101 - featured on Tomorrows World 1984 |
Commercial | Corona Type | | Otto Braun (Sold Ionovac In Germany) | Plasma | Tweeter | 1978 | | | | | http://duckduckgo.com/Corona Type Otto Braun (Sold Ionovac In Germany) | DE | Corona Acoustic | Company 1977-99, now Lansch Audio 314 - 514 |
Commercial | Digiplasma | | | Plasma | Tweeter | 1981 | | | | | https://www.plasmaspeaker.de/iml.html | SW | IML | PWM tweeter |
Commercial | Plasmasonic | | Henri Bondar, Jean-Claude Fourriere | Corona | Full | 1984 | | | | | http://tmms.co.jp/EFD/Industrial_issues/Plasmasonic.htm | FR | Audio Reference | Headphones, few hundred made - $2000 1 |
Commercial | Ion TW-1 | | | Plasma | Tweeter | 1998 | | | | | http://www.acapella.de/ | DE | Acapella (ATR) | Current - Was 8,500 euro on its own, now only part of full system TW-1, TW-1S |
Commercial | Corona Type | | Rudiger Lansche, Otto Braun | Plasma | Tweeter | 1998 | | | | | https://www.lansche-audio.com/products/plasmatweeter/ | SW | Lansche Audio | Current - Took over Corona Acoustic's designs 314 - 514 |
Commercial | A-3000 | | | Plasma | Tweeter | 1999 | | | | | https://osakaya-com.translate.goog/store/items/speaker/287/?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-US&_x_tr_pto=wapp | JP | CSE Inc. | Negative ion tweeter, 15kHz+ super tweeter |
Commercial | Realon | | Mr Hata | Plasma | Tweeter | 1999 | | | | | http://duckduckgo.com/Realon Mr Hata | JP | Real Onkyo Co. Ltd. | Refurb Mk3 listed on Amazon Japan 2014 Mk 1,2,3 ,TS-5A, PS-2000 |
Commercial | Plasmasonic | | | Plasma | Mid/Tweeter | 2007 | | | | | https://www.easternvoltageresearch.com/ | US | Eastern Voltage Research | Current - tesla coil based design for shows and demos |
Commercial | VA, Arc One, EAL | | Boris G. Viger | Plasma | Tweeter | 2012 | | | | | https://web.archive.org/web/20190423175932/http://viger-audio.com/ | RU | Viger Audio, Plasma Voice | Solid state plasma tweeters VA-5pro,VA6, VA7 |
Commercial | Plasma Signature | | Jim Jordan | Plasma | Tweeter | 2016 | | | | | https://www.vaughnloudspeakers.com/products | US | Vaugn Loudspeakers | Current - Recreated Ionovac |
Early History | Corona discharge | | Otto Von Guericke | Corona | | 1672 | | | | | http://duckduckgo.com/Corona discharge Otto Von Guericke | DE | | First observation of a corona discharge on pointed conductors |
Early History | Electric wind | | Francis Hauksbee | Corona | | 1709 | | | | | http://duckduckgo.com/Electric wind Francis Hauksbee | UK | | First observation of the electric wind |
Early History | Electric vapour | | Isaac Newton | Corona | | 1717 | | | | | http://duckduckgo.com/Electric vapour Isaac Newton | UK | | 2nd edition of Opticks notes the electric vapour |
Early History | Brushes of light | | Jean Antoine Nollet | Corona | | 1746 | | | | | http://duckduckgo.com/Brushes of light Jean Antoine Nollet | FR | | Corona discharge observations |
Early History | Electrical fire | | Benjamin Franklin | Corona | | 1747 | | | | | http://duckduckgo.com/Electrical fire Benjamin Franklin | US | | Electrical fire observations to Peter Collins |
Early History | The electric fly | | Benjamin Wilson | Corona | | 1750 | | | | | http://duckduckgo.com/The electric fly Benjamin Wilson | UK | | Blast resembling wind, proven not to exist in vacuum |
Early History | Feel the fire | | Ebenezer Kinnersley | Corona | | 1752 | | | | | http://duckduckgo.com/Feel the fire Ebenezer Kinnersley | UK | | Feel the fire discharges blow on your hand |
Early History | Not in a vacuum | | Tiberius Cavallo | Corona | | 1777 | | | | | http://duckduckgo.com/Not in a vacuum Tiberius Cavallo | IT | | Further proving the wind does not exist in vacuum |
Early History | Sound of flame in a tube | | Dr Byron Higgins | Flame | | 1777 | | | | | http://duckduckgo.com/Sound of flame in a tube Dr Byron Higgins | UK | | Resonant hydrogen flame in a metal pipe |
Early History | Electric wind | | Michael Faraday | Corona | | 1838 | | | | | http://duckduckgo.com/Electric wind Michael Faraday | UK | | Electric wind observations |
Early History | Sondhauss Tube | | Karl Sondhauss | Flame | | 1850 | | | | | http://duckduckgo.com/Sondhauss Tube Karl Sondhauss | | | Sealed end glass tube |
Early History | Gas light response | | John Leconte | Flame | | 1858 | | | | | http://duckduckgo.com/Gas light response John Leconte | US | | Observed gas lights response to music |
Early History | Rijke Tube | | Pieter Rijke | Flame | | 1859 | | | | | http://duckduckgo.com/Rijke Tube Pieter Rijke | | | Open ended glass tube |
Early History | Singing Flame | | John Tyndall | Flame | | 1867 | | | | | http://duckduckgo.com/Singing Flame John Tyndall | UK | | Royal Institution demonstrations Faraday, Wheatstone |
Early History | Viewing electric wind | | August Topler | Corona | | 1868 | | | | | http://duckduckgo.com/Viewing electric wind August Topler | | | Invent schleiren optics and used them to view electric wind |
Early History | Pyrophone | | Frederic Eugene Kastner | Flame | | 1869 | | | | | https://blog.sciencemuseum.org.uk/pyrophone1/ | | | Also known as burning harmonica or chemical harmonica |
Early History | Aerophone | | Thomas Edison | Air | | 1878 | | | | | http://duckduckgo.com/Aerophone Thomas Edison | US | | Here for ref, not 100% massless but an early compressed air attempt |
Early History | Singing electric arc | | Hermann Theodor Simon | Arc | Music | 1898 | | | | | http://duckduckgo.com/Singing electric arc Hermann Theodor Simon | | | Similar work at the same time as Duddell on Arcs University of Gottingen |
Early History | Auxetophone | | Short & Parsons, Victor | Air | Music | 1898 | | | | | http://www.douglas-self.com/MUSEUM/COMMS/auxetophone/auxetoph.htm | | | Nearly massless compressed air amplifier Horace Short, Charles Parsons |
Early History | Singing Arc | | William Du Bois Duddell | Arc | | 1899 | | | | | https://blog.sciencemuseum.org.uk/pyrophone1/ | UK | | Oscillator based on carbon arc lamps |
Early History | Poulsen Arc | | Valdemar Poulsen | Arc | | 1903 | | | | | http://duckduckgo.com/Poulsen Arc Valdemar Poulsen | | | A radio transmitter based on Duddell's work Also spelt Poulson |
Early History | Telharmonium | | Thaddeus Cahill | Arc | Music | 1906 | | | | | http://duckduckgo.com/Telharmonium Thaddeus Cahill | | | Added arcs based on Duddell's work |
Early History | Singing Arc | | Max Kohl | Arc | | 1911 | | | | | http://duckduckgo.com/Singing Arc Max Kohl | | | A demo of Duddell's design |
Forum | Forum with Ionovac details 2006 | Klipsch | | Plasma | Tweeter | 2200 | | | | | https://community.klipsch.com/index.php?/topic/72366-dukane-ionovac-information/ | | Dukane Ionovac | Forum with Ionovac details 2006 |
Forum | Forum site with various massless speaker discussions | DIYAudio | | | | 2200 | | | | | https://www.diyaudio.com/community/ | | | A great forum site with various massless speaker discussions |
Forum | Forum on the Lansche Corona tweeter | Steve Hoffman forum | | Plasma | Tweeter | 2200 | | | | | https://forums.stevehoffman.tv/threads/corona-plasma-tweeter.386189/ | | Lansche Audio | On the Lansche Corona tweeter |
Forum | A forum with some bits of info in the thread | Hifi Sentralen | | | | 2200 | | | | | https://www.hifisentralen.no/forumet/threads/plasmah%C3%B8yttaler.95851/ | | | A forum with some bits of info in the thread |
Forum | The Hub No moving parts No problem | Audiogon | | | | 2200 | | | | | https://forum.audiogon.com/discussions/the-hub-no-moving-parts-no-problem?sort_order=asc | | | An article/forum focused on Klein |
Forum | Ionic Speakers | The Audio Circuit | | | | 2200 | | | | | https://web.archive.org/web/20190713051542/http://www.audiocircuit.com/DIY/Ionic-Speakers | | | Some brief bits of info (dead site, archive link) |
Forum | Debunking the Myth that a Lighter Diaphragm | Audio Science Review | | | | 2200 | | | | | https://www.audiosciencereview.com/forum/index.php?threads/debunking-the-myth-that-a-lighter-diaphragm-enables-a-faster-speaker-driver.25910/ | | | An in depth discussion about mass in speakers |
Forum | UNUSUAL speaker designs | Audiokarma | | | | 2200 | | | | | https://www.audiokarma.org/forums/index.php?threads/unusual-speaker-designs.494299/ | | | Various odd speakers |
Forum | If interested in ion drivers, found more info | Audio Asylum | Bondar | Corona | Full | 2200 | | | | | https://web.archive.org/web/20230316010852/https://www.audioasylum.com/cgi/t.mpl?f=general&m=337109 | | | Some Plasmasonic extra details |
Forum | PlasmaSonic a headphone that puts even the Orpheus | Audio Asylum | Bondar | Corona | Full | 2200 | | | | | https://www.audioasylum.com/messages/general/335595/ | | | Some Plasmasonic extra details |
Forum | DuKane Ionovac Information | Klipsch | Jack Podplesky | Plasma | Tweeter | 2200 | | | | | https://community.klipsch.com/index.php?/topic/72366-dukane-ionovac-information/ | | | More Ionovac and t3500 details |
Forum | True Subbass | Audio Heritage | Gibber | Plasma | Tweeter | 2200 | | | | | https://www.audioheritage.org/vbulletin/showthread.php?27051-True-Subbass/page5 | | | Pics of a Phonogen Model 1A? Mentions Braun Ionovac |
Magazine | Singing Flame | Scientific American | | Flame | | 1877 | Apr | 14th | | | http://duckduckgo.com/Singing Flame | | | |
Magazine | Music in Electric Arcs | New York Times | V.J.Y. | Arc | | 1901 | Apr | 28 | 7 | | http://duckduckgo.com/Music in Electric Arcs V.J.Y. | | | |
Magazine | A Speaking Incandescent Lamp | Scientific American | | Arc | | 1912 | Dec | 107 | 527 | | http://duckduckgo.com/A Speaking Incandescent Lamp | | | |
Magazine | Wireless Waves | | Condenser | Plasma | Mic | 1923 | Sep | | | | https://www.newsshopper.co.uk/news/6348224.invention-to-improve-the-sound-of-music/ | | | On the kathodophone |
Magazine | Cellule thermoionique de grande puissance a atmosphere gazeuse et ions positifs | L'Onde Electrique | S. Klein | Plasma | Tweeter | 1946 | Oct | 235 | 367-373 | | http://duckduckgo.com/Cellule thermoionique de grande puissance a atmosphere gazeuse et ions positifs S. Klein | | | |
Magazine | Ionophone | La TSF Pour Tous | S. Klein | Plasma | Tweeter | 1951 | Sep | 251 | 278 | | http://duckduckgo.com/Ionophone S. Klein | | | |
Magazine | Les bases physiques du haut-parleur et du microphone ioniques | La TSF Pour Tous | S. Klein | Corona | Mic | 1951 | Oct | No.276 | 340-342 | | http://duckduckgo.com/Les bases physiques du haut-parleur et du microphone ioniques S. Klein | | | |
Magazine | L Ionodyne | Toute La Radio | M. Bonhomme | Plasma | Tweeter | 1951 | Nov | 160 | 291 | | http://duckduckgo.com/L Ionodyne M. Bonhomme | | | |
Magazine | Ionophone | Toute La Radio | M. Bonhomme | Plasma | Tweeter | 1951 | Oct | 159 | 251 | | http://duckduckgo.com/Ionophone M. Bonhomme | | | |
Magazine | Ionophone Circuitry | Radio Electronics | E. Aisberg, M. Bonhomme | Plasma | Tweeter | 1951 | Dec | | | | http://duckduckgo.com/Ionophone Circuitry E. Aisberg, M. Bonhomme | | | |
Magazine | Ionophone | Radio Electronics | E. Aisberg, M. Bonhomme | Plasma | Tweeter | 1951 | Nov | | | | http://duckduckgo.com/Ionophone E. Aisberg, M. Bonhomme | | | |
Magazine | M. Siegfried Klein l inventeur de l ionophone recoit le grand prix de l invention | Le Monde | S. Klein | Plasma | Tweeter | 1952 | Dec | | | | http://duckduckgo.com/M. Siegfried Klein l inventeur de l ionophone recoit le grand prix de l invention S. Klein | | | |
Magazine | A New Speaker Principle | Saturday Review | Edgar Villchur | Plasma | Tweeter | 1952 | Sep | 27 | 60-61 | | http://duckduckgo.com/A New Speaker Principle Edgar Villchur | | | |
Magazine | The reproduction of sound | Physics Today | Edgar Villchur | Plasma | Tweeter | 1952 | Sep | 5 | 10-13 | | http://duckduckgo.com/The reproduction of sound Edgar Villchur | | | |
Magazine | A New Speaker Principle | Saturday Review | Edgar Villchur | Plasma | Tweeter | 1952 | Sep | | 60-61 | | http://edgarvillchur.com/a-new-speaker-principle/ | | | Copy of 1952 magazine article |
Magazine | Qui na jamais entendu un haut-parleur ionique Audax 1952 | TSF et TV | | Plasma | Tweeter | 1952 | | | | | http://duckduckgo.com/Qui na jamais entendu un haut-parleur ionique Audax 1952 | | | |
Magazine | The Ionophone | L'Onde Electrique | S. Klein | Plasma | Tweeter | 1952 | Jul | 304 | 314-320 | | http://duckduckgo.com/The Ionophone S. Klein | | | |
Magazine | Loudspeaker Without Diaphragm | Wireless World | F.L.D. | Plasma | Tweeter | 1952 | Jan | 23 | 2 | | http://duckduckgo.com/Loudspeaker Without Diaphragm F.L.D. | | | On Klein ionophone |
Magazine | Interation dans l air de deux Ultra-sons | Toute La Radio | S. Klein | Plasma | Tweeter | 1953 | Nov | | 352-354 | | http://duckduckgo.com/Interation dans l air de deux Ultra-sons S. Klein | | | |
Magazine | Wanted:- Inertialess Speakers | Radio-Electronics | Hugo Gernsback | | | 1953 | Oct | | 33 | | http://duckduckgo.com/Wanted:- Inertialess Speakers Hugo Gernsback | | | |
Magazine | March Meetings | Wireless World | D. Tombs | Corona | Full | 1956 | Mar | | 147 | | http://duckduckgo.com/March Meetings D. Tombs | | | 22nd Physical Society symposium on Loudspeakers Dr. D.M. Tombs at 3.0 at the Royal Institute of British Architects |
Magazine | The Corona Loudspeaker | Radio and Television News | G. Shirley | Corona | Full | 1956 | | October | 57-59 | | http://duckduckgo.com/The Corona Loudspeaker G. Shirley | | Televex Co. | On Dr. D.M. Tombs corona |
Magazine | Applications of Corona Effects | Electronics | D. Tombs | Corona | Full | 1957 | | 30 | 198 | | http://duckduckgo.com/Applications of Corona Effects D. Tombs | | | |
Magazine | Loudspeakers of the Future | Radio Electronics | G. Shirley | Corona | Full | 1957 | Nov | | 44-46 | | http://duckduckgo.com/Loudspeakers of the Future G. Shirley | | Televex Co. | On Dr. D.M. Tombs corona and Ionophone |
Magazine | Ionophone article | Radio und Fernsehen | | Corona | | 1958 | May | 7 | 296-298 | | http://duckduckgo.com/Ionophone article | | | |
Magazine | Ionovac Speaker: Still a Brilliant Failure | Consumer Reports magazine | | Plasma | Tweeter | 1959 | May | | | | http://duckduckgo.com/Ionovac Speaker: Still a Brilliant Failure | | | |
Magazine | Sound Producing Unit with Ionophone | Radio (Russia) | E. Plotkin, B. Karateev ,V. Prutz | Plasma | Tweeter | 1959 | | 12 | 18 | | http://duckduckgo.com/Sound Producing Unit with Ionophone E. Plotkin, B. Karateev ,V. Prutz | | | |
Magazine | Discharge Loudspeaker Kills Mice | The New Scientist | | | | 1960 | Jan | | 100 | | http://duckduckgo.com/Discharge Loudspeaker Kills Mice | | | |
Magazine | DuKane Ionovac Speaker Review | High Fidelity | | Plasma | Tweeter | 1961 | Mar | | | | http://duckduckgo.com/DuKane Ionovac Speaker Review | | | |
Magazine | Introducing the Ionovac | Popular Electronics | Dukane | Plasma | Tweeter | 1961 | May | | Cover, 56 | | http://duckduckgo.com/Introducing the Ionovac Dukane | | | |
Magazine | The Driverless Tweeter from Paris | High Fidelity | Norman Eisenberg | Plasma | Tweeter | 1961 | Jan | | | | http://duckduckgo.com/The Driverless Tweeter from Paris Norman Eisenberg | | | |
Magazine | Lo Ionovac | Radiorama | | Plasma | Tweeter | 1962 | Jan | | 42-44 | | http://duckduckgo.com/Lo Ionovac | | | |
Magazine | How the Ionophone works | Hi-Fi News | | Plasma | Tweeter | 1965 | May | | | | http://duckduckgo.com/How the Ionophone works | | | |
Magazine | The Ionophone | Practical Wireless | A. E. Falkus | Plasma | Tweeter | 1965 | Apr | | 1141-1143, 1194 | | http://duckduckgo.com/The Ionophone A. E. Falkus | | | |
Magazine | Fane ionoFane Model 603 Loudspeaker | The Gramophone | | Plasma | Tweeter | 1966 | May | | | | http://duckduckgo.com/Fane ionoFane Model 603 Loudspeaker | | | |
Magazine | IonoFane 601 Ionic Treble Unit & 603 Loudspeaker | Hi-Fi News | | Plasma | Tweeter | 1966 | Apr | | | | http://duckduckgo.com/IonoFane 601 Ionic Treble Unit & 603 Loudspeaker | | | |
Magazine | Whatever Happened to these Revolutionary Loudspeaker Designs? | Stereo Review | George L. Augspurger | | | 1967 | Aug | | 49 | | http://duckduckgo.com/Whatever Happened to these Revolutionary Loudspeaker Designs? George L. Augspurger | | | |
Magazine | Flame Amplification and a better HiFi Loudspeaker | Popular Electronics | James Joseph | Flame | | 1968 | May | | 47-53 | | https://massless.info/images/Popular%20Electronics%20May%201968%2031401532-Flame-Amplification.pdf | | | Dr. A. G. Cattaneo |
Magazine | The Force Field Loud-speaker | Audio Forum | John Iverson | Corona | Full | 1977 | | | | | http://duckduckgo.com/The Force Field Loud-speaker John Iverson | | | |
Magazine | Real Onkyo Realon | Audiophile | John Hiraga | Plasma | Tweeter | 1978 | April | No.4 | | | http://duckduckgo.com/Real Onkyo Realon John Hiraga | | | |
Magazine | Coneless Speaker uses plasma driver (the Hill Plasmatronic) | Popular Science | John Free | Plasma | Mid/Tweeter | 1979 | Jun | | | | http://duckduckgo.com/Coneless Speaker uses plasma driver (the Hill Plasmatronic) John Free | | | |
Magazine | Hill Plasmatronic Loudspeaker | International Audio Review | | Plasma | Mid/Tweeter | 1980 | | 3 | 130-135 | | http://duckduckgo.com/Hill Plasmatronic Loudspeaker | | | |
Magazine | Alternative Speaker Technologies | Audio | G. Stock | | | 1980 | Aug | 64 | 32-37 | | http://duckduckgo.com/Alternative Speaker Technologies G. Stock | | | |
Magazine | It was the perfect high end product | Wall Street Journal | Nelson Pass | | | 1980 | | | Front | | http://duckduckgo.com/It was the perfect high end product Nelson Pass | | | |
Magazine | Le tweeter absolut? Le transducteur ionique Klein-Magnat | L'Audiophile | Gerard Chretien | Plasma | Tweeter | 1980 | Dec | | 7-13 | | http://duckduckgo.com/Le tweeter absolut? Le transducteur ionique Klein-Magnat Gerard Chretien | | | |
Magazine | Hill Plasmatronics Type 1 loudspeaker | Stereophile | J. Gordon Holt | Plasma | Mid/Tweeter | 1980 | Apr | | | | https://www.stereophile.com/content/hill-plasmatronics-type-1-loudspeaker | | Stereophile | Stereophile web version of 1980 Plasmatronic article |
Magazine | The Ionic Man | Stereophile | | Corona | Full | 1980 | | 6,No. 1 | Cover, 2, | | http://duckduckgo.com/The Ionic Man | | | Nelson Pass |
Magazine | The Plasmatronics speaker system | The Absolute Sound | | Plasma | Mid/Tweeter | 1980 | Sep | 5,No19 | 276 | | http://duckduckgo.com/The Plasmatronics speaker system | | | |
Magazine | Plasmalautsprecher - Wandlersystem der Zukunft? | HiFi Exclusiv | | Plasma | | 1981 | Nov | | | | http://duckduckgo.com/Plasmalautsprecher - Wandlersystem der Zukunft? | | | Digiplasma IML tweeter |
Magazine | Haut-parleur vers une ere nouvelle | La Nouvelle Revue Du Son | Henri Bondar | Corona | Full | 1982 | Jul | 58 | 71-79 | | http://duckduckgo.com/Haut-parleur vers une ere nouvelle Henri Bondar | | | |
Magazine | Un haut-parleur a plasma froid | La Nouvelle Revue Du Son | Henri Bondar | Corona | Full | 1982 | Aug | 59 | 73-80 | | http://duckduckgo.com/Un haut-parleur a plasma froid Henri Bondar | | | |
Magazine | Plasmasonic | La Nouvelle Revue Du Son | Henri Bondar | Corona | Full | 1984 | Mar | 76 | 100 | | http://duckduckgo.com/Plasmasonic Henri Bondar | | | |
Magazine | Ion Age | Hi-Fi Answers | Jimmy Hughes | | | 1984 | Jul | | Cover, | | http://duckduckgo.com/Ion Age Jimmy Hughes | | | |
Magazine | Low Inertia Loudspeakers | Hi-Fi News | Stanley Kelly | | | 1985 | Jan | | 55-57 | | http://duckduckgo.com/Low Inertia Loudspeakers Stanley Kelly | | | |
Magazine | Le Haut-Parleur Mecconnu | Science & Vie High Tech (French) | Henri-Pierre Penel | | | 1987 | | | 64-68 | | http://duckduckgo.com/Le Haut-Parleur Mecconnu Henri-Pierre Penel | | | |
Magazine | Les Haut-Parleurs Ioniques | Audiophile | Alain Deraedt | Corona | | 1990 | | 22 | 85-88 | | http://duckduckgo.com/Les Haut-Parleurs Ioniques Alain Deraedt | | | |
Magazine | Les Haut-Parleurs Ioniques II | Audiophile | Alain Deraedt | Corona | | 1990 | | 23 | 9 | | http://duckduckgo.com/Les Haut-Parleurs Ioniques II Alain Deraedt | | | |
Magazine | Les Haut-Parleurs Ioniques (suite et fin) | Audiophile | Alain Deraedt | Corona | | 1990 | | 24 | 15-18 | | http://duckduckgo.com/Les Haut-Parleurs Ioniques (suite et fin) Alain Deraedt | | | |
Magazine | The Strange Life and Bizarre Disappearance of John Iverson | The Absolute Sound | Robert F. Sabin | Corona | | 1994 | Jun/Jul | 96 | | | https://groups.google.com/g/rec.audio.high-end/c/EU4SbMJnXv0 | | | |
Magazine | Technology Hot throat makes a safer sound | New Scientist | Barry Fox | Plasma | Tweeter | 1996 | | | | | https://www.newscientist.com/article/mg15120483-200-technology-hot-throat-makes-a-safer-sound/?ignored=irrelevant | | Credo Audio AG | Article on the Credo tweeter |
Magazine | Ionic Loudspeakers | Gramophone | Keith Howard | | | 1997 | Jan | | 133-136 | | http://duckduckgo.com/Ionic Loudspeakers Keith Howard | | | |
Magazine | Plasma Speaker Revived | Hi-Fi News | Barry Fox | | | 1997 | Jan | | 17 | | http://duckduckgo.com/Plasma Speaker Revived Barry Fox | | | |
Magazine | Comfort like a larger room CSE A-3000 negative ion tweeter | Radio Technology | Kazumasa Takahashi | Plasma | Tweeter | 1999 | Oct | 53 | 92-93 | | http://duckduckgo.com/Comfort like a larger room CSE A-3000 negative ion tweeter Kazumasa Takahashi | | | CSE A-3000 |
Magazine | Spund Scope | Stereo Sound | Okihiko Kanno | Plasma | Tweeter | 1999 | | 131 | | | http://duckduckgo.com/Spund Scope Okihiko Kanno | | | CSE A-3000 |
Magazine | Build a Plasma Tweeter | AudioXpress | | Plasma | Tweeter | 2003 | Apr | 34 Iss 4 | | | http://duckduckgo.com/Build a Plasma Tweeter | | | |
Magazine | Care and Maintenance of DuKane Ionovac Tweeters | | D. Schoo | Plasma | Tweeter | 2003 | Dec | | | | http://duckduckgo.com/Care and Maintenance of DuKane Ionovac Tweeters D. Schoo | | | Oct 2002 original |
Magazine | Dukane Ionovac The History of a Brilliant Failure | | D. Schoo | Plasma | Tweeter | 2004 | Mar | | | | http://duckduckgo.com/Dukane Ionovac The History of a Brilliant Failure D. Schoo | | | |
Magazine | Plasma, a New Tweeter Technology Lansche Audio No.8 | Softpedia | Florin Tibu | Plasma | Tweeter | 2008 | Apr | | | | https://news.softpedia.com/news/Plasma-a-New-Tweeter-Technology-Lansche-Audio-No-8-82971.shtml | | Lansche Audio | Lansche Audio - It's new all over again (2008) |
Magazine | Das Licht am Ende des Tunnels | Hifitest | | Plasma | Tweeter | 2011 | | | | | https://www.hifitest.de/test/lautsprecher-stereo/lansche-audio-cubus-5069 | | Lansche Audio | Lansche Audio Cubus Review 2011 Hifitest.de |
Magazine | Lansche Audio 5.1 Loudspeaker | Stereophile | John Atkinson | Plasma | Tweeter | 2012 | Jul | | | | https://www.stereophile.com/content/lansche-audio-51-loudspeaker | | Lansche Audio | Lansche Audio 5.1 Review |
Magazine | Er leuchtet (Lansche No. 3.1) | Stereoplay | Holger Biermann | Plasma | Tweeter | 2014 | Jan | | 58-61 | | http://duckduckgo.com/Er leuchtet (Lansche No. 3.1) Holger Biermann | | | |
Magazine | The DuKane Ionovac Speaker | Antique Radio Classified | D. Schoo | Plasma | Tweeter | 2014 | Jan | 1 | 34-40 | | http://duckduckgo.com/The DuKane Ionovac Speaker D. Schoo | | | |
Magazine | Back to the Ion age | Hi-Fi News | Keith Howard | | | 2017 | Aug | | 24-29 | | http://duckduckgo.com/Back to the Ion age Keith Howard | | | |
Paper | Letter from Dr. Higgins (hydrogen flame sound) | Journal of natural philosophy, chemistry and the arts | William Nicholson | | | 1802 | | 1 | 130 | | http://duckduckgo.com/Letter from Dr. Higgins (hydrogen flame sound) William Nicholson | UK | | On the 1777 discovery by Higgins |
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Paper | On the Influence of Musical Sounds on the Flame of a Jet of Coal Gas | American Journal of Science | John Leconte | Flame | | 1858 | Jan | 2nd Series 23 | 62-67 | | http://duckduckgo.com/On the Influence of Musical Sounds on the Flame of a Jet of Coal Gas John Leconte | | | |
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Paper | The Reason for the Hissing of the Electric Arc | Nature | Hertha Ayrton | Arc | | 1899 | Jul | No.1552, Vol 60 | 302-305 | | http://duckduckgo.com/The Reason for the Hissing of the Electric Arc Hertha Ayrton | | | |
Paper | The hissing of the electric arc | Journal of the IEE | Hertha Ayrton | Arc | | 1899 | Jun | Vol 28, Iss 120 | | | http://duckduckgo.com/The hissing of the electric arc Hertha Ayrton | | | |
Paper | Some Experiments on the Direct-Current Arc | Nature | William Duddell | Arc | | 1900 | Dec | Vol. 63, no. 1625 | 182-183 | | http://duckduckgo.com/Some Experiments on the Direct-Current Arc William Duddell | | | |
Paper | On Rapid Variations in the Current through the Direct-Current Arc | IEE | William Duddell | Arc | | 1901 | Dec | Vol 30, iss 148 | 232-283 | | http://duckduckgo.com/On Rapid Variations in the Current through the Direct-Current Arc William Duddell | | | |
Paper | Sur les phenomenes de l arc chantant | Eclairage Electrique | Blondel, Andre | Arc | | 1905 | | Vol 44 | 41-58 and 81-104 | | http://duckduckgo.com/Sur les phenomenes de l arc chantant Blondel, Andre | | | |
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Paper | Speaking Incandescent Lamp | Physikalische Zeitschrift, | K. Ort And J. Ridger | Arc | | 1912 | | | | | http://duckduckgo.com/Speaking Incandescent Lamp K. Ort And J. Ridger | | | |
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Paper | Cellule thermoionique de grande puissance a atmosphere gazeuse | Comptes Rendus | S. Klein | Corona | | 1946 | Jan | | 1282-1284 | | http://duckduckgo.com/Cellule thermoionique de grande puissance a atmosphere gazeuse S. Klein | | | |
Paper | Augmentation du rendement de la cellule thermoionique a grande puissance par superposition | Comptes Rendus | S. Klein | Corona | | 1951 | Jul | | 143-145 | | http://duckduckgo.com/Augmentation du rendement de la cellule thermoionique a grande puissance par superposition S. Klein | | | |
Paper | Un nouveau transducteur electroacoustique l ionophone | Acustica | S. Klein | Plasma | Tweeter | 1954 | | Vol 4, No 1 | 77-79 | | https://www.ingentaconnect.com/content/dav/aaua/1954/00000004/00000001/art00026 | FR | | A description of a new French loudspeaker without membrane and its uses in music reproduction and for ultrasonics |
Paper | The Klein-Plessey Ionophone loudspeaker | BBC R&D | J.R. Chew | Plasma | | 1954 | Jan | -13 | | | http://duckduckgo.com/The Klein-Plessey Ionophone loudspeaker J.R. Chew | | | |
Paper | Corona Wind Loudspeakers | Nature | D. Tombs | Corona | Full | 1955 | | 176 | 923 | | http://duckduckgo.com/Corona Wind Loudspeakers D. Tombs | | | |
Paper | Corona-Type Loudspeaker | JASA | A. Anthony, F. Oda | Corona | Full | 1955 | | 27 | 1005 | | http://duckduckgo.com/Corona-Type Loudspeaker A. Anthony, F. Oda | | | |
Paper | The Corona Wind Loudspeaker | JAES | G. Shirley | Corona | Full | 1957 | | 5 | 23-31 | | http://duckduckgo.com/The Corona Wind Loudspeaker G. Shirley | | Televex Co. | On Dr. D.M. Tombs corona |
Paper | Electroacoustics and Transducers | JASA | F. V. Hunt | | | 1958 | May | 30, No.5 | 375-377 | | http://duckduckgo.com/Electroacoustics and Transducers F. V. Hunt | | | |
Paper | Description of a corona-type loudspeaker used in bioacoustic research | Experientia | E. Ackerman, A. Anthony, F. Oda | Corona | Full | 1958 | Oct | 14, Iss 10 | 384-386 | | http://duckduckgo.com/Description of a corona-type loudspeaker used in bioacoustic research E. Ackerman, A. Anthony, F. Oda | | | |
Paper | Ozone production by a corona-type loudspeaker and its toxic effects in mice | Experientia | A. Anthony, S. Babcock, F. Oda | Corona | | 1959 | Dec | 15, Iss 12 | 481-482 | | http://duckduckgo.com/Ozone production by a corona-type loudspeaker and its toxic effects in mice A. Anthony, S. Babcock, F. Oda | | | |
Paper | Corona -Type Loudspeaker for Animal Studies | JASA | Eugene Ackerman, Adam Anthony, Fujio Oda | Corona | | 1961 | | 33 | | | http://duckduckgo.com/Corona -Type Loudspeaker for Animal Studies Eugene Ackerman, Adam Anthony, Fujio Oda | | | |
Paper | A History of the Electric Wind | American Journal of Physics | Myron Robinson | | | 1962 | | Vol 30 | | | http://duckduckgo.com/A History of the Electric Wind Myron Robinson | | | |
Paper | Exploratory Study Of The Ionophone | MIT BSc | Bruce Lowell Chrisman And George Moore Irwin | Plasma | | 1964 | Jun | | 366-372 | | http://duckduckgo.com/Exploratory Study Of The Ionophone Bruce Lowell Chrisman And George Moore Irwin | | | |
Paper | Modulated Combustion (Dragon) Loudspeaker | JASA | James Arnold | Flame | | 1965 | | 38 | | | http://duckduckgo.com/Modulated Combustion (Dragon) Loudspeaker James Arnold | | | |
Paper | The STL-Ionophone sound source | STL-QPSR | Fransson, F. | Plasma | | 1965 | | 6,No. 1 | No 2, page 27-30 | | http://duckduckgo.com/The STL-Ionophone sound source Fransson, F. | | | |
Paper | Acoustic Wave Generation and Amplification in a Plasma | APS | Uno Ingard | Plasma | | 1966 | May | 145, 41 | | | http://duckduckgo.com/Acoustic Wave Generation and Amplification in a Plasma Uno Ingard | | | |
Paper | Musical Flames | Nature | W. R. Babcock, K. L. Baker & A. G. Cattaneo | Flame | | 1967 | Nov | 216 | 676-678 | | http://duckduckgo.com/Musical Flames W. R. Babcock, K. L. Baker & A. G. Cattaneo | | | |
Paper | Preliminary investigation of the electrothermal loudspeaker | Combustion and Flame | John Burchard | Flame | | 1969 | Feb | Vol 13, Iss 1 | 82-86 | | http://duckduckgo.com/Preliminary investigation of the electrothermal loudspeaker John Burchard | | | |
Paper | Musical Flames | JAES | W. R. Babcock, K. L. Baker And A. G. Cattaneo | Flame | | 1969 | Jun | Vol 17 Iss 3 | 312-314 | | http://duckduckgo.com/Musical Flames W. R. Babcock, K. L. Baker And A. G. Cattaneo | | | |
Paper | An application of the STL-ionophone as a microphone | STL-QPSR | Jansson, E. V. And Sundberg, J. | Plasma | Mic | 1969 | | Vol 10, No4 | 51-52 | | http://duckduckgo.com/An application of the STL-ionophone as a microphone Jansson, E. V. And Sundberg, J. | | | |
Paper | Ion Acoustic Shock Waves | Physics of Fluids | D. Biskamp And D. Parkinson | | | 1970 | Jan | Vol 13 | 2295-2299 | | http://duckduckgo.com/Ion Acoustic Shock Waves D. Biskamp And D. Parkinson | | | |
Paper | Electrical impedance measurements of an electrothermal loudspeaker | JASA | G. A. Russel | Flame | | 1970 | | Vol 47, no 6 | 1482-1484 | | http://duckduckgo.com/Electrical impedance measurements of an electrothermal loudspeaker G. A. Russel | | | |
Paper | Properties of the STL-ionophone transducer | STL-QPSR | Fransson, F. And Jansson, E. V. | Plasma | | 1971 | | 12 | No 2-3 page 43-52 | | https://www.speech.kth.se/prod/publications/files/qpsr/1971/1971_12_2-3_043-052.pdf | | | |
Paper | Horn-type electrothermal loudspeakers | IEEE Transactions on Audio and Electroacoustics | T. Paige, M. Hamid | Flame | | 1972 | Aug | Vol 20, Iss 3 | 218-222 | | http://duckduckgo.com/Horn-type electrothermal loudspeakers T. Paige, M. Hamid | | | |
Paper | Excitation d ondes acoustiques par une flamme | Czech Journal of Physics | M. Fitaire And D. Sinitean | Flame | | 1972 | | B(22) | 394-397 | | http://duckduckgo.com/Excitation d ondes acoustiques par une flamme M. Fitaire And D. Sinitean | | | |
Paper | Sound sources with corona discharges | Dept. Phys, Ehime Uni, Japan | Kiichiro Matsuzawa | Corona | | 1973 | Nov | Vol 54, No 2 | 494-498 | | http://duckduckgo.com/Sound sources with corona discharges Kiichiro Matsuzawa | | | |
Paper | Flame Loudspeakers | Acustica | M. S. Sodha, V. K. Tripathe, And J. K. Sharma | Flame | | 1978 | | 40 | 68-69 | | https://www.ingentaconnect.com/content/dav/aaua/1978/00000040/00000001/art00012 | | | |
Paper | A corona-type point source for model studies in acoustics | Applied Acoustics | M.K.Lim | Corona | | 1980 | Aug | Vol 14 Iss 4 | 245-252 | | http://duckduckgo.com/A corona-type point source for model studies in acoustics M.K.Lim | | | |
Paper | Corona paper | Sov. Phys.-Acoust | Ostroumov, G.A. | Corona | | 1982 | | 28 | 159-60 | | http://duckduckgo.com/Corona paper Ostroumov, G.A. | | | |
Paper | Effect of neutral fluid velocity on direct conversion from electrical to fluid kinetic energy in an electro-fluid-dynamics (EFP) device | Journal of Physics D:Applied Physics | H. Bondar And F. Bastien | Plasma | | 1986 | | 19 | 1657-1663 | | http://duckduckgo.com/Effect of neutral fluid velocity on direct conversion from electrical to fluid kinetic energy in an electro-fluid-dynamics (EFP) device H. Bondar And F. Bastien | | | |
Paper | Theory Ingenuity And Wizardry In Speaker Design | JASA | George L. Augspurger | | | 1985 | | 77 | 1303-1308 | | https://www.gammaelectronics.xyz/audio_04-1987_speaker.html | | | Massless designs position in history |
Paper | Acoustic refraction by a spark discharge in air | JASA | L. D. Lafleur, J. J. Matesse, And R. L. Spross | Plasma | | 1987 | | 54(2) | | | http://duckduckgo.com/Acoustic refraction by a spark discharge in air L. D. Lafleur, J. J. Matesse, And R. L. Spross | | | |
Paper | Modeling of a DC glow plasma loudspeaker | JASA | Michael S. Mazzola And G. Marshall Molen | Plasma | | 1987 | Jun | Vol 81, Iss 6 | 1972-1978 | | http://duckduckgo.com/Modeling of a DC glow plasma loudspeaker Michael S. Mazzola And G. Marshall Molen | | | |
Paper | Acoustics and gas discharges: applications to loudspeakers | Journal of Physics D:Applied Physics | F. Bastien | Plasma | | 1987 | Jun | 20 | 1547-1557 | | http://duckduckgo.com/Acoustics and gas discharges: applications to loudspeakers F. Bastien | | | |
Paper | Distortion, Directivity and Circuit modeling of a Needle Array Plasma Loudspeaker | Thesis Ohio University | Ron Sterba | Corona | | 1991 | Mar | Thesis | | | http://duckduckgo.com/Distortion, Directivity and Circuit modeling of a Needle Array Plasma Loudspeaker Ron Sterba | | | |
Paper | Electroacoustic transducer using corona effect | JAES | Alain Deraedt | Corona | | 1991 | Feb | 90th Conv | 494-498 | | http://duckduckgo.com/Electroacoustic transducer using corona effect Alain Deraedt | | | |
Paper | Sources acoustiques liees aux transducteurs ioniques | Journal De Physique | P. Bequin, P. Herzog | Plasma | | 1994 | May | | 221-224 | | http://duckduckgo.com/Sources acoustiques liees aux transducteurs ioniques P. Bequin, P. Herzog | | | |
Paper | Industrial Plasma Engineering | | J. Reece Roth | Plasma | | 1995 | | 1,2 | | | http://duckduckgo.com/Industrial Plasma Engineering J. Reece Roth | | | |
Paper | Etude des sources acoustiques associees aux decharges corona negatives | Universite du Maine | V. Montembault | Corona | | 1997 | | | | | http://duckduckgo.com/Etude des sources acoustiques associees aux decharges corona negatives V. Montembault | | | |
Paper | Fifty Years of Loudspeaker Developments as Viewed Through the | JAES | Mark R. Gander | | | 1998 | Jan/Feb | 46, No 1/2 | 43-58 | | http://duckduckgo.com/Fifty Years of Loudspeaker Developments as Viewed Through the Mark R. Gander | | | |
Paper | Rendement d un haut-parleur a decharges corona negatives | Proceedings of the 5th International French Congress on Acoustics | K. Castor And P. Bequin | Corona | | 2000 | | | 676-679 | | http://duckduckgo.com/Rendement d un haut-parleur a decharges corona negatives K. Castor And P. Bequin | | | |
Paper | A plasma loudspeaker using a DC carbon arc in a modulated magnetic field | IEEE Conference on Plasma Science | Igor Alexeff | Arc | | 2001 | | | | | http://duckduckgo.com/A plasma loudspeaker using a DC carbon arc in a modulated magnetic field Igor Alexeff | | | |
Paper | Modelling of Negative point to plane corona loudspeaker | The European Physical Journal | | Corona | | 2001 | | 15 | 57-67 | | http://duckduckgo.com/Modelling of Negative point to plane corona loudspeaker | | | |
Paper | Caracterisation des sources acoustiques associees aux decharges couronnes negatives | Universite du Maine | K. Castor | Corona | | 2001 | | | | | http://duckduckgo.com/Caracterisation des sources acoustiques associees aux decharges couronnes negatives K. Castor | | | |
Paper | Direct Current Glow Discharges in Atmospheric Air | IEEE Transactions on Plasma Science | | Plasma | | 2002 | Feb | 30, No.1 | | | http://duckduckgo.com/Direct Current Glow Discharges in Atmospheric Air | | | |
Paper | The Plasma Tweeter | MIT | Colin Joye | Plasma | Tweeter | 2003 | Oct | | | | http://duckduckgo.com/The Plasma Tweeter Colin Joye | | | Presentation |
Paper | Formation of Large-volume, High-pressure Plasmas in Microhollow Cathode Discharges | Applied Physics Letters | | Plasma | | 2003 | May | 82, No.19 | | | http://duckduckgo.com/Formation of Large-volume, High-pressure Plasmas in Microhollow Cathode Discharges | | | |
Paper | Solid State Plasma Tweeter | MIT? | Sam Kendig, Danny Shen, Mike Seeman (Colin Joye) | Plasma | Tweeter | 2003 | May | Thesis | | | http://duckduckgo.com/Solid State Plasma Tweeter Sam Kendig, Danny Shen, Mike Seeman (Colin Joye) | | | |
Paper | The Plasma Tweeter | MIT | Colin Joye | Plasma | Tweeter | 2003 | Feb | | | | http://duckduckgo.com/The Plasma Tweeter Colin Joye | | | Presentation |
Paper | Biefeld-Brown Effect: Misinterpretation of Corona Wind Phenomena | AIAA | Martin Tajmar | Corona | | 2004 | Feb | 42, No 2 | 315-318 | | http://duckduckgo.com/Biefeld-Brown Effect: Misinterpretation of Corona Wind Phenomena Martin Tajmar | | | Thomas Townsend Brown was full of shit |
Paper | A plasma loudspeaker using a DC carbon arc in a modulated magneticfield | Pulsed Power Plasma Science, 2001 | Alexeff, I., Grace, M., Araya, E., Loria, J.A.D | Plasma | | 2005 | Jun | | 10.1109/ PPPS.2001 .961277 | | http://duckduckgo.com/A plasma loudspeaker using a DC carbon arc in a modulated magneticfield Alexeff, I., Grace, M., Araya, E., Loria, J.A.D | | | |
Paper | Modulated Plasma Audio Transducer | Youngstown State University | Mark Barlow | Plasma | | 2006 | Jan | | | | http://duckduckgo.com/Modulated Plasma Audio Transducer Mark Barlow | | | |
Paper | Modelling Plasma Loudspeakers | JASA | Ph. Bequina, K. Castor, Ph. Herzog, V. Montembault | Plasma | | 2007 | | Vol 121, Iss 4 | 1960-1970 | | http://duckduckgo.com/Modelling Plasma Loudspeakers Ph. Bequina, K. Castor, Ph. Herzog, V. Montembault | | | |
Paper | EFA Loudspeakers (Kronos Air Technologies) | ESA Annual Meeting on Electrostatics | Igor A. Krichtafovitch, Sergey V. Karpov, Nels E. Jewell-Larsen,Jacob L. Oharah, Vladislav A. Korolev | Corona | | 2008 | | A2 | | | http://www.electrostatics.org/images/ESA_2008_A2.pdf | | | |
Paper | Electro-Acoustic Coupling in a Plasma Gas PhD Thesis | The Open University | Yvonne Sutton | Plasma | | 2011 | Sep | | | | https://www.youtube.com/watch?v=hy-XPgWaU8M | | | |
Paper | A study of the plasma tweeter | Ball State Uni Thesis | Kalalau Cantrell | Plasma | Tweeter | 2011 | May | A-342 | | | http://duckduckgo.com/A study of the plasma tweeter Kalalau Cantrell | | | |
Paper | Looking into a Plasma Loudspeaker | IEEE Transactions on Plasma Science | Yvonne Sutton, Jon Moore, David Sharp, N Braithwaite | Plasma | | 2011 | | Nov, Vol 39 | 2146 | | http://duckduckgo.com/Looking into a Plasma Loudspeaker Yvonne Sutton, Jon Moore, David Sharp, N Braithwaite | | | |
Paper | On the study of Ionic Microphone | JAES | Hiroshi Akino, Hirofumi Shimokawa, Tadashi Kikutani, Jackie Green | Corona | Mic | 2012 | Oct | 133th Conv | | | http://duckduckgo.com/On the study of Ionic Microphone Hiroshi Akino, Hirofumi Shimokawa, Tadashi Kikutani, Jackie Green | | | |
Paper | The singing arc The oldest memristor? | Building Service-Oriented Government Lessons, Challenges and Prospects | Jean-Marc Ginoux, Bruno Rosetto | Arc | | 2012 | Aug | Chap 39 | | | https://arxiv.org/pdf/1408.5103.pdf | | | |
Paper | Design and Evaluation of Electronic Circuit for Plasma Speaker | World Congress on Engineering | Daniel Severinsen And Gourab Sen Gupta | Plasma | | 2013 | Jul | II | | | http://duckduckgo.com/Design and Evaluation of Electronic Circuit for Plasma Speaker Daniel Severinsen And Gourab Sen Gupta | | | |
Paper | Modelling of a corona discharge microphone | Journal of Physics D:Applied Physics | Philippe Bequin, V Joly And Ph Herzog | Corona | | 2013 | Apr | Vol 46, no 17 | | | http://duckduckgo.com/Modelling of a corona discharge microphone Philippe Bequin, V Joly And Ph Herzog | | | |
Paper | The electrical imagination sound analogies, equivalent circuits, and the rise of electroacoustics | Osiris | Roland Wittje | | | 2013 | | Vol 28 #1 | 40-63 | | http://duckduckgo.com/The electrical imagination sound analogies, equivalent circuits, and the rise of electroacoustics Roland Wittje | | | |
Paper | Stable sound wave generation in weakly ionized air medium | Odessa National Polytechnic University | Maxim Chizhov, Maxim Eingorn,Vladimir Kulinskii | Corona | | 2013 | Apr | | | | http://duckduckgo.com/Stable sound wave generation in weakly ionized air medium Maxim Chizhov, Maxim Eingorn,Vladimir Kulinskii | | | |
Paper | Physics of thermo-acoustic sound generation | Journal of Applied Physics | Daschewski,Boehm,Prager,Kreutzbruck And Harrer | Thermo | | 2013 | Sep | Vol 114 | | | http://duckduckgo.com/Physics of thermo-acoustic sound generation Daschewski,Boehm,Prager,Kreutzbruck And Harrer | | | |
Paper | Stable Generation Sound Waves In Weak- Ionized Air Environment | Applied Physics (Russian) | Mv Chizhov Et Al | Corona | | 2014 | | 32431 | 45-51 | | http://duckduckgo.com/Stable Generation Sound Waves In Weak- Ionized Air Environment Mv Chizhov Et Al | | | |
Paper | A Comparison Between Dynamic Loudspeakers and Plasma Loudspeakers | Lulea University of Technology | Aleksandar Jovic | | | 2014 | Jun | Thesis | | | http://duckduckgo.com/A Comparison Between Dynamic Loudspeakers and Plasma Loudspeakers Aleksandar Jovic | | | |
Paper | Plasma Speaker | International Journal of Scientific & Engineering Research | Sagar Samant, Mohammed Husein Sabuwala, Bhargav Gokalgandhi, Amit Pandey | Plasma | | 2014 | Sep | Vol 5, Iss 9 | 572-574 | | http://duckduckgo.com/Plasma Speaker Sagar Samant, Mohammed Husein Sabuwala, Bhargav Gokalgandhi, Amit Pandey | | | |
Paper | The High Fidelity Plasma Speaker | APS Division of Plasma Physics, Salisbury University | James Mcgall | Plasma | | 2014 | Oct | Vol 59, No 15 | | | http://duckduckgo.com/The High Fidelity Plasma Speaker James Mcgall | | | |
Paper | Acoustic Characteristics and Distortion of an Ionic Loudspeaker | IEEE LATIN AMERICA TRANSACTIONS | P. M. Gomez, E. D Onofrio And G. Santiago | Plasma | | 2015 | Mar | Vol 13, No 3 | 578-582 | | http://duckduckgo.com/Acoustic Characteristics and Distortion of an Ionic Loudspeaker P. M. Gomez, E. D Onofrio And G. Santiago | | | |
Paper | The Measurement and Calibration of Sound Reproducing Systems | JAES | Floyd E. Toole | | | 2015 | Jul | Vol 63 No 7/8 | 512-541 | | http://duckduckgo.com/The Measurement and Calibration of Sound Reproducing Systems Floyd E. Toole | | | |
Paper | Membraneless Speaker or Plasma Speaker | BRNO UNIVERSITY OF TECHNOLOGY | Josef Kovar | Plasma | | 2015 | | | | | http://duckduckgo.com/Membraneless Speaker or Plasma Speaker Josef Kovar | | | |
Paper | Konzept und Prototyp eines Ionenwindlautsprechers | 29th TONMEISTERTAGUNG - VDT INTERNATIONAL CONVENTION | S. Merchel, L. Creutzburg, A. Schwock, T. Fleck Und M.E. Altinsoy | Corona | | 2016 | Nov | | | | http://duckduckgo.com/Konzept und Prototyp eines Ionenwindlautsprechers S. Merchel, L. Creutzburg, A. Schwock, T. Fleck Und M.E. Altinsoy | | | |
Paper | Thermophony in real gases | Universitat Potsdam thesis | Maxim Daschewski | Flame | | 2016 | Nov | | | | http://duckduckgo.com/Thermophony in real gases Maxim Daschewski | | | |
Paper | Implementierung eines Ionenwindlautsprechers ohne Plasmaflamme | Technische Universitat Dresden, Lehrstuhl fur Akustik und Haptik | Sebastian Merchel, Lukas Creutzburg,Andreas Schwock, Tim Fleck Und M. Ercan Altinsoy | Plasma | | 2017 | | | 529-531 | | http://duckduckgo.com/Implementierung eines Ionenwindlautsprechers ohne Plasmaflamme Sebastian Merchel, Lukas Creutzburg,Andreas Schwock, Tim Fleck Und M. Ercan Altinsoy | | | |
Paper | Wireless/Wired Automatic Switched plasma Tweeter & Speaker System | Journal of Electronics and Communication Engineering | Rupali Singh Et Al | Plasma | Tweeter | 2017 | Mar/Apr | Vol 12, Iss 2 | 28-33 | | http://duckduckgo.com/Wireless/Wired Automatic Switched plasma Tweeter & Speaker System Rupali Singh Et Al | | | |
Paper | Physical modeling and characterization of thermo-acoustic loudspeakers made of silver nano-wire films | Journal of Applied Physics | Paolo La Torraca, L. Larcher, Marco Bobinger, Paolo Pavan | Thermo | | 2017 | Jun | 121(21):214502 | | | http://duckduckgo.com/Physical modeling and characterization of thermo-acoustic loudspeakers made of silver nano-wire films Paolo La Torraca, L. Larcher, Marco Bobinger, Paolo Pavan | | | |
Paper | The creation of electric wind due to the electrohydrodynamic force | Nature Communications | Sanghoo Park,Uros Cvelbar, Wonho Choe, Se Youn Moon | Corona | | 2018 | | 0.632638889 | | | http://duckduckgo.com/The creation of electric wind due to the electrohydrodynamic force Sanghoo Park,Uros Cvelbar, Wonho Choe, Se Youn Moon | | | |
Paper | A simplified formulation of wire-plate corona discharge in air | Journal of Electrostatics | Bouazza, Yanallah, Pontiga, Chen | Corona | | 2018 | Apr | 92 | 54-65 | | http://duckduckgo.com/A simplified formulation of wire-plate corona discharge in air Bouazza, Yanallah, Pontiga, Chen | | | |
Paper | An Ultrasonic Plasma Microphone for Structural Health Monitoring | Princeton Plasma Physics Lab | John Carlsson | Plasma | Mic | 2018 | Sep | Web | 17-3317-1 | | http://duckduckgo.com/An Ultrasonic Plasma Microphone for Structural Health Monitoring John Carlsson | | | |
Paper | A review of the Plasma Loudspeaker (Ionic Loudspeaker):Principles of operation, general model and parts | JAES | Maria Carolina Rodreguez | | | 2020 | Oct | 149th Conv | | | http://duckduckgo.com/A review of the Plasma Loudspeaker (Ionic Loudspeaker):Principles of operation, general model and parts Maria Carolina Rodreguez | | | |
Paper | Development of a plasma electroacoustic actuator for active noise control applications | Journal of Physics D: Applied Physics | S Sergeev, H Lissek, A Howling, I Furno, G Plyushchev And P Leyland | Corona | | 2020 | Sep | Vol 53 | | | http://duckduckgo.com/Development of a plasma electroacoustic actuator for active noise control applications S Sergeev, H Lissek, A Howling, I Furno, G Plyushchev And P Leyland | | | |
Paper | Der Plasma-Lautsprecher als Lehrversuch | PhyDid | Florian Hubert, Friedrich-Alexander, Philipp Dorsch, Patrick K. Kroh, Hans-Michael Guenther | Plasma | | 2021 | Jul | 1/20 | 15-25 | | http://duckduckgo.com/Der Plasma-Lautsprecher als Lehrversuch Florian Hubert, Friedrich-Alexander, Philipp Dorsch, Patrick K. Kroh, Hans-Michael Guenther | | | |
Paper | Corona Discharge Actuator as an Active Sound Absorber Under Normal and Oblique Incidence | physics.app-ph | Stanislav Sergeev | Corona | Woofer/Mid | 2021 | Aug | | 2108.13866v1 | | http://duckduckgo.com/Corona Discharge Actuator as an Active Sound Absorber Under Normal and Oblique Incidence Stanislav Sergeev | | | |
Paper | Microplasma microphones | Acta Acustica | Philippe Bequin , Adalbert Nanda Tonlio, And Stephane Durand | Plasma | Mic | 2021 | Aug | Vol 5, Iss 37 | | | http://duckduckgo.com/Microplasma microphones Philippe Bequin , Adalbert Nanda Tonlio, And Stephane Durand | | | |
Paper | Corona discharge actuator for active sound absorption | Ecole Polytechnique Federale de Lausanne | Stanislav Sergeev, Herve Lissek | Corona | Woofer/Mid | 2021 | Sep | | | | http://duckduckgo.com/Corona discharge actuator for active sound absorption Stanislav Sergeev, Herve Lissek | | | |
Paper | New high fidelity (hi-fi) three-dimensional thermophone CNT sponge | Extreme Mechanics Letters | Jinxin Wang, Houyang Li, Yanxia Feng | Thermo | | 2021 | Nov | Vol 49 | | | https://www.sciencedirect.com/science/article/abs/pii/S2352431621002042 | | | |
Paper | Theory and construction of a plasma tweeter | Signal Processing and Speech Communication Laboratory | Niklas Urban | Plasma | Tweeter | 2022 | Jan | | | | http://duckduckgo.com/Theory and construction of a plasma tweeter Niklas Urban | | | |
Paper | A Carbon-Based Thermoacoustic Speaker With High Vocal Efficiency and Low Power Consumption | IEEE Sensors Journal | Cheng Zhao, Jiacheng Zhou, Shunyi Zhang, Qingying Ren, Debo Wang | Thermo | | 2022 | Aug | Vol 22 Iss 18 | | | https://ieeexplore.ieee.org/document/9852977 | | | |
Paper | Pyrolyzed Silk Carbon Fabric-Enabled Wearable Functional Actuators With Heating and Sound-Emitting Capabilities | IEEE Transactions on | Lu-Qi Tao, Guanya Wang, Hao Sun, Congcong Zhu, Zhirong Peng | Thermo | | 2023 | Jan | Vol 70 Iss 3 | | | https://ieeexplore.ieee.org/document/10018841 | | | |
Paper | Ultrabroadband sound control with deep-subwavelength plasmacoustic metalayers | Nature Communications | Stanislav Sergeev, Romain Fleury, Herve Lissek | Corona | Woofer/Mid | 2023 | May | Vol 14, Art 2874 | | | https://www.youtube.com/watch?v=-7Eemh63NcA | | | |
Patent | Improvement in pyrophones | | Frederic Kastner | Flame | Music | 1873 | | | | US164458 | https://worldwide.espacenet.com/patent/search?q=US164458 | US | | Hydrogen flame in tubes pipe organ |
Patent | Speaking Machine | | Edison | Air | | 1878 | | | | US201760 | https://worldwide.espacenet.com/patent/search?q=US201760 | US | | Compressed air, nearly massless for ref |
Patent | Art of and apparatus for generating music | | Cahill | Air | Music | 1897 | | | | US580035 | https://worldwide.espacenet.com/patent/search?q=US580035 | US | | Telharmonium |
Patent | Improvements in and connected with means for the | | Duddell | Arc | | 1900 | | | | GB190021629 | https://worldwide.espacenet.com/patent/search?q=GB190021629 | GB | | Convert DC to audible AC using arc |
Patent | Improvements in or relating to wireless | | Blondel, Andre | Arc | | 1903 | | | | GB190215527 | https://worldwide.espacenet.com/patent/search?q=GB190215527 | GB | | Speaker, mic and circuits based on Duddell |
Patent | Improvements relating to the production of alternating | | Poulsen | Arc | | 1904 | | | | GB190315599 | https://worldwide.espacenet.com/patent/search?q=GB190315599 | GB | | Arc lamp based telegraph transmitter/receiver |
Patent | Improvements in and relating to | | Hermanus | Arc | Mic | 1906 | | | | GB190604585 | https://worldwide.espacenet.com/patent/search?q=GB190604585 | GB | | Arc microphone, piston against electrode |
Patent | Improvements in wireless telephony | | Forest | Arc | | 1907 | | | | GB190628125 | https://worldwide.espacenet.com/patent/search?q=GB190628125 | GB | | Uses Duddell and Simon's speaking arc |
Patent | System of electrical transmission | | Richard Engler | Arc | | 1915 | | | | US1134983 | https://worldwide.espacenet.com/patent/search?q=US1134983 | US | | An Arcophone or speaking arc |
Patent | Improved method of trans | | Stille | Arc | Mic | 1915 | | | | GB191407202 | https://worldwide.espacenet.com/patent/search?q=GB191407202 | GB | | Arc microphone (reverse of singing arc) |
Patent | Improvements in or relating to microphones and the like | | Vogt Hans, Josef Engl, Joseph Massolle | Plasma | Mic | 1921 | | | | GB157442 | https://worldwide.espacenet.com/patent/search?q=GB157442 | GB | Tri-Ergon | The Kathodophone patent |
Patent | Telephone Transmitter | | Richard Engler | Corona | | 1923 | | | | US1443620 | https://worldwide.espacenet.com/patent/search?q=US1443620 | US | | Use radioactive material or X-Rays for Ions, uses Ionophone or Phonion |
Patent | Gaseous telephone transmitter | | Richard Engler | Corona | | 1924 | | | | US1507884 | https://worldwide.espacenet.com/patent/search?q=US1507884 | US | | Using magnets to control an ion stream speaker |
Patent | Telephone Transmitter | | Richard Engler | Corona | | 1925 | | | | US1533730 | https://worldwide.espacenet.com/patent/search?q=US1533730 | US | | Early corona wind using X-rays for ionisation |
Patent | Method of and means for translating sound waves | | Shrader James E | Corona | | 1926 | | | | US1605295 | https://worldwide.espacenet.com/patent/search?q=US1605295 | US | Westinghouse Electric & Mfg Co. | Early corona wind with radioactive electrodes for ionisation |
Patent | Electrical sound-reproducing apparatus | | De Forest Lee | Corona | | 1927 | | | | US1641664 | https://worldwide.espacenet.com/patent/search?q=US1641664 | US | Forest Phonofilm Corp De | Coiled corona speaker in a parabola |
Patent | Improvements relating to elec | | General Electric | Plasma | | 1927 | | | | GB264811 | https://worldwide.espacenet.com/patent/search?q=GB264811 | GB | | Point to plane corona discharge |
Patent | System for converting sound waves into electrical waves | | Clyde Snook Homer | Corona | Mic | 1928 | | | | US1690255 | https://worldwide.espacenet.com/patent/search?q=US1690255 | US | Western Electric Co. | Corona microphone |
Patent | Loud Speaker | | L. Fleischmann | Corona | | 1928 | | | | US1687011 | https://worldwide.espacenet.com/patent/search?q=US1687011 | US | | Many point to plane corona speaker |
Patent | Intertransposition of sound | | Lindenblad, Rca | Corona | | 1928 | | | | US1685075 | https://worldwide.espacenet.com/patent/search?q=US1685075 | US | | Point to air/ground corona discharge. 189 patents!, Swedish |
Patent | Sound reproducing method and apparatus | | Ramsey | Plasma | | 1928 | | | | US1680694 | https://worldwide.espacenet.com/patent/search?q=US1680694 | US | | Horn loaded plasma speaker mod RF |
Patent | Improvements relating to elec | | General Electric | Corona | | 1928 | | | | GB265958 | https://worldwide.espacenet.com/patent/search?q=GB265958 | GB | | Points on a disc corona wind. |
Patent | Sound-emitting apparatus | | Ruben | Plasma | | 1929 | | | | US1702951 | https://worldwide.espacenet.com/patent/search?q=US1702951 | US | | Horn loaded plasma |
Patent | Method of and apparatus for reproducing sound | | Lilienfeld | Corona | | 1929 | | | | US1723244 | https://worldwide.espacenet.com/patent/search?q=US1723244 | US | | Modulate air flow around disc |
Patent | Loudspeaker arrangement | | Loewe | Corona | | 1930 | | | | GB303175 | https://worldwide.espacenet.com/patent/search?q=GB303175 | GB | | Grid modulated ion source |
Patent | Sound reproducer | | Wolff | Corona | | 1930 | | | | US1758993 | https://worldwide.espacenet.com/patent/search?q=US1758993 | US | | Many points corona discharge. Ref to above patent 1695075 wrong! |
Patent | Sound-emitting device | | Ruben | Corona | | 1930 | | | | US1751888 | https://worldwide.espacenet.com/patent/search?q=US1751888 | US | | Heated cathode ion speaker |
Patent | Sound Producing Device | | De Forest | Plasma | | 1931 | | | | US1806745 | https://worldwide.espacenet.com/patent/search?q=US1806745 | US | | Modulate gas flow with high voltage |
Patent | Improvements in or relating to | | Klein S. | Plasma | | 1956 | | | | GB757358 | https://worldwide.espacenet.com/patent/search?q=GB757358 | GB | | Ionovac, Also-US2847516, GB757111, FR1041790, BE519086, FR67664E |
Patent | Electrical Transducer | | Klein S. | Plasma | | 1956 | | | | US2768246 | https://worldwide.espacenet.com/patent/search?q=US2768246 | US | | Ionovac, Also-GB756546, CH317527, DE1095883, FR1041790, US2768246 |
Patent | Ionic triode speaker | | Halus, Holcomb | Plasma | | 1957 | | | | US2793324 | https://worldwide.espacenet.com/patent/search?q=US2793324 | US | | Corona discharge around a hole |
Patent | Improvements in and relating to | | Klein S. | Plasma | | 1958 | | | | GB792312 | https://worldwide.espacenet.com/patent/search?q=GB792312 | GB | | Multi horn Ionovac |
Patent | Electrokinetic apparatus | | Townsend Brown | Corona | | 1960 | | | | US2949550 | https://worldwide.espacenet.com/patent/search?q=US2949550 | US | | Corona wind speaker copy of Tombs |
Patent | Ionofon-type electroacoustic transducer | | Plotkin E B | Plasma | | 1962 | | | | SU151896 | https://worldwide.espacenet.com/patent/search?q=SU151896 | SU | | Improvments on the ionophone |
Patent | Inertialess Transducer | | William Torn | Plasma | | 1963 | | | | US3105124 | https://worldwide.espacenet.com/patent/search?q=US3105124 | US | | Dukane ionovac |
Patent | Apparatus for producing sound | | Gianni, Ducati | Plasma | | 1965 | | | | US3185778 | https://worldwide.espacenet.com/patent/search?q=US3185778 | US | | Horn loaded plasma |
Patent | Koronaphon | | Wilhelms Walter | Corona | | 1965 | | | | DE1462256 | https://worldwide.espacenet.com/patent/search?q=DE1462256 | DE | | Many random point corona |
Patent | Appareil sonore electrohydro | | Townsend Brown | Corona | | 1966 | | | | FR1427695 | https://worldwide.espacenet.com/patent/search?q=FR1427695 | FR | Electrokinetics | Corona wind copy of Tombs |
Patent | Electrohydrodynamic sound devices | | Townsend Brown | Corona | | 1967 | | | | CA771815 | https://worldwide.espacenet.com/patent/search?q=CA771815 | CA | Electrokinetics | Corona wind copy of Tombs |
Patent | Generation and transmission | | Townsend Brown | Corona | | 1967 | | | | US3018394 | https://worldwide.espacenet.com/patent/search?q=US3018394 | US | | Corona wind copy of Tombs |
Patent | Ionic electroacoustic transducer | | Seligson, Lanier | Corona | | 1969 | | | | US3476887 | https://worldwide.espacenet.com/patent/search?q=US3476887 | US | | Many points to blades corona wind (blades all vertical, points only one side) |
Patent | Method etc. generating an acoustic output | | United Aircraft Corp | Plasma | | 1970 | | | | GB1199859 | https://worldwide.espacenet.com/patent/search?q=GB1199859 | GB | | Modulating flame with high voltage, US3565209 |
Patent | A system for imparting movement to ionizable | | Townsend Brown | Corona | | 1972 | | | | GB1274875 | https://worldwide.espacenet.com/patent/search?q=GB1274875 | GB | Guidance Technology Inc. | Corona triode copy of Tombs |
Patent | Koronaphon | | Walter Wilhelms | Plasma | | 1972 | | | | DE2115544 | https://worldwide.espacenet.com/patent/search?q=DE2115544 | DE | | Circuit for a plasma loudspeaker (modulated supply?) |
Patent | Thoughts on the ? speaker | | Kami Kiyoshi | Corona | | 1975 | | | | JPS5092755 | https://worldwide.espacenet.com/patent/search?q=JPS5092755 | JP | Denjo Gepax Research Institute Co. | Horn loaded corona |
Patent | Guide-band plasma-type loudspeaker | | Doucet, Henri | Corona | | 1975 | | | | FR2246151 | https://worldwide.espacenet.com/patent/search?q=FR2246151 | FR | | Corona wind from radioactive surface |
Patent | Omnidirectional corona wind loudspeaker | | Kikukawa Takashi | Plasma | | 1976 | | | | JPS5161816 | https://worldwide.espacenet.com/patent/search?q=JPS5161816 | JP | TDK | Plasma speaker with diaphragm(!) to stop gas |
Patent | Ion Loudspeaker | | Yama Amp Masa Toshi | Plasma | Tweeter | 1976 | | | | JPS5167735 | https://worldwide.espacenet.com/patent/search?q=JPS5167735 | JP | | An ion loudspeaker with a diaphragm to keep the bad gases in (!) |
Patent | Grid controlled ionic wind loud | | Kiyoshi | Plasma | | 1978 | | | | JPS53141612 | https://worldwide.espacenet.com/patent/search?q=JPS53141612 | JP | | Corona triode, wires, single ended and push pull. |
Patent | Ionic Wind Loudspeaker controlled by | | Kiyoshi | Plasma | | 1978 | | | | JPS53137128 | https://worldwide.espacenet.com/patent/search?q=JPS53137128 | JP | | Corona triode, points, single ended and push pull. |
Patent | Ionic Wind Loudspeaker | | Kiyoshi | Plasma | | 1978 | | | | JPS53142218 | https://worldwide.espacenet.com/patent/search?q=JPS53142218 | JP | | Corona triode, just single ended, points |
Patent | Ion Speaker | | Hatake Kiyoshi | Plasma | | 1979 | | | | JPS54119914 | https://worldwide.espacenet.com/patent/search?q=JPS54119914 | JP | | Replaceable plasma speaker tube |
Patent | Plasma Loudspeaker | | Hill | Plasma | | 1979 | | | | GB2023373 | https://worldwide.espacenet.com/patent/search?q=GB2023373 | GB | | Plasmatronic, glow discharges in parallel. US4219705, JP54143225, JP2918300, FR2422314, DE2913804 |
Patent | Corona-loudspeaker | | Klein S. | Plasma | | 1980 | | | | EP17886 | https://worldwide.espacenet.com/patent/search?q=EP17886 | EP | | Magnat |
Patent | Corona-effect loudspeaker | | Klein S. | Plasma | | 1980 | | | | EP17885 | https://worldwide.espacenet.com/patent/search?q=EP17885 | EP | | Magnat |
Patent | Sound emitter | | Klein S. | Plasma | | 1981 | | | | US4306120 | https://worldwide.espacenet.com/patent/search?q=US4306120 | US | | Magnat/Ionovac |
Patent | Ionic electro-acoustic transducer | | Bondar | Corona | | 1982 | | | | EP65911 | https://worldwide.espacenet.com/patent/search?q=EP65911 | EP | | Plasmasonic, Also-US4460809, JP58001395, FR2506551, EP0065911 |
Patent | Transducer for the transformation | | Klein S. | Plasma | | 1984 | | | | US4482788 | https://worldwide.espacenet.com/patent/search?q=US4482788 | US | | Also EP0017886, SU1175352, JP55140400, FR245444, ES8100754 |
Patent | Process and device for converting a periodic | | Bondar | Corona | | 1984 | | | | US4460809 | https://worldwide.espacenet.com/patent/search?q=US4460809 | US | | Ionic pins and plates |
Patent | Corona effect loudspeaker | | Klein S. | Plasma | | 1984 | | | | FR2544951 | https://worldwide.espacenet.com/patent/search?q=FR2544951 | FR | | Magnat |
Patent | Corona-effect sound emitter | | Klein S. | Plasma | | 1984 | | | | US4464544 | https://worldwide.espacenet.com/patent/search?q=US4464544 | US | | Magnat |
Patent | Ionic electroacoustic transducer | | Deraedt | Corona | | 1987 | | | | FR2588710 | https://worldwide.espacenet.com/patent/search?q=FR2588710 | FR | | Push-pull corona wind |
Patent | Electrokinetic transducing met | | Lee | Corona | | 1988 | | | | WO8807785 | https://worldwide.espacenet.com/patent/search?q=WO8807785 | WO | | Corona wind, Offset wires to thicker bars. |
Patent | Electrokinetic transducing met | | Lee | Corona | | 1988 | | | | US4789801 | https://worldwide.espacenet.com/patent/search?q=US4789801 | US | | Corona wind, Offset wires to thicker aerodynamic bars. |
Patent | Electronic-Acoustic transducer | | Jiyannkuroodo Fuurieeru | Corona | | 1990 | | | | JPH02174398 | https://worldwide.espacenet.com/patent/search?q=JPH02174398 | JP | | Corona wind dual point |
Patent | Electroacoustic Transducer | | Fourriere | Corona | | 1990 | | | | EP370846 | https://worldwide.espacenet.com/patent/search?q=EP370846 | EP | | Tolteque, Corona/Glow modulated by plates. JP2174398, FR2638930 |
Patent | Tranducteur electroacoustique, et enceinte | | Bayle Pierre, Gibert Alain | Corona | | 1991 | | | | FR2685156 | https://worldwide.espacenet.com/patent/search?q=FR2685156 | FR | | Many point to plane corona? |
Patent | Method and apparatus for tran | | Ide, Hashimoto | Arc | | 1993 | | | | US5220246 | https://worldwide.espacenet.com/patent/search?q=US5220246 | US | | Possible glow discharge (arc column), single point to plane. Based on DC TIG welder. |
Patent | Speaker utilizing DC corona dis | | Masaaki | Plasma | | 1994 | | | | JPH06327099 | https://worldwide.espacenet.com/patent/search?q=JPH06327099 | JP | | Point to plane corona discharge,+ push pull |
Patent | Method and device for arc sound | | Eizo | Arc | | 1997 | | | | JP2643009 | https://worldwide.espacenet.com/patent/search?q=JP2643009 | JP | | Arc/flame nozzle, a TIG welder |
Patent | Corona Discharge Loudspeaker | | Howard | Corona | | 1997 | | | | GB2312590 | https://worldwide.espacenet.com/patent/search?q=GB2312590 | GB | | Corona wind wires with grids either side. |
Patent | Corona Discharge Loudspeaker | | Chambers | Corona | | 2004 | | | | GB2403372 | https://worldwide.espacenet.com/patent/search?q=GB2403372 | GB | | Corona wind |
Patent | Electroststic Loudspeaker and | | Krichtapovitch | Corona | | 2007 | | | | WO2007127810 | https://worldwide.espacenet.com/patent/search?q=WO2007127810 | WO | Kronos Air Technologies | Kronos EFA application (not granted yet, company closed), corona wind |
Patent | Sound generator | | Sony Corp | Plasma | | 2008 | | | | JP2010141858 | https://worldwide.espacenet.com/patent/search?q=JP2010141858 | JP | | Sony's attempt at a plasma tweeter design |
Patent | Headphone | | Akino Yutaka | Plasma | | 2008 | | | | JP2008236235 | https://worldwide.espacenet.com/patent/search?q=JP2008236235 | JP | Audio Technica | Plasma headphone |
Patent | Method of Acoustic Wave Generation | | Krichtafovitch Igor A, Jacob Oharah L, Korolyov Vladislav A, Jewell-Larsen Nels E, Karpov Sergey | Corona | | 2009 | | | | US2009022340 | https://worldwide.espacenet.com/patent/search?q=US2009022340 | US | Kronos Air Technologies | Kronos US version granted |
Patent | Electricity and sound conversion | | Yao Zongdong | Plasma | | 2010 | | | | CN101778327 | https://worldwide.espacenet.com/patent/search?q=CN101778327 | CN | | Plasma speaker controlled by magnetic field, or not the translation is vague |
Patent | Plasma loudspeaker | | Zhao Ge, Gao Yifeng, Cao Dong | Plasma | | 2011 | | | | CN202218397 | https://worldwide.espacenet.com/patent/search?q=CN202218397 | CN | | Plasma speaker, classic style with two electrodes, a reflector behind |
Patent | Electroacoustic Transducer | | Akino Yutaka | Plasma | | 2011 | | | | JP2011188037 | https://worldwide.espacenet.com/patent/search?q=JP2011188037 | JP | Audio Technica | Plasma tweeter on inert gas |
Patent | Plasma tweeter e.g. teslums tweeter, for e.g. acoustic lab | | Braun Alexander | Plasma | | 2012 | | | | DE102010026112 | https://worldwide.espacenet.com/patent/search?q=DE102010026112 | DE | | Plasma speaker on tesla coil |
Patent | Electric-arc loudspeaker | | Boris G. Viger | Plasma | | 2012 | | | | RU2496254 | https://worldwide.espacenet.com/patent/search?q=RU2496254 | RU | | Plasma tweeter EAL/VA7 of Viger Audio/Plasma Voice |
Patent | Electro-acoustic transducer | | Akino Hiroshi | Plasma | Tweeter | 2013 | | | | US2013223647 | https://worldwide.espacenet.com/patent/search?q=US2013223647 | US | | Plasma Tweeter with inert gas supply |
Patent | Control device for plasma loudspeaker and plasma loudspeaker | | Lu Yulong | Plasma | | 2013 | | | | CN101820573 | https://worldwide.espacenet.com/patent/search?q=CN101820573 | CN | | Plasma speaker amp |
Patent | Microphone | | Yu Akino | Plasma | Mic | 2013 | | | | JP5281428 | https://worldwide.espacenet.com/patent/search?q=JP5281428 | JP | | Plasma based microphone |
Patent | Electroacoustic Converter | | Chyzhov Maksym Viktorovych, Yun Kostiantyn Moiseiovych | Corona | | 2014 | | | | UA105621 | https://worldwide.espacenet.com/patent/search?q=UA105621 | UA | Copra Acoustic | Corona wind, WaveIon |
Patent | Electroacoustic transducer | | Yu Akino | Plasma | | 2014 | | | | JP5474614 | https://worldwide.espacenet.com/patent/search?q=JP5474614 | JP | | Plasma speaker |
Patent | Speaker Device | | Imahori Osamu, Nakada Takayuki, Sugawa Akihide | Plasma | Tweeter | 2015 | | | | JP2015201747 | https://worldwide.espacenet.com/patent/search?q=JP2015201747 | JP | | Dynamic speaker with plasma tweeter |
Patent | Electroacoustic transducer | | Yu Akino | Plasma | Mic | 2015 | | | | JP5777540 | https://worldwide.espacenet.com/patent/search?q=JP5777540 | JP | | Plasma speaker and microphone |
Patent | Plasma loudspeaker earphone | | Shi Peng | Plasma | | 2016 | | | | CN105763985 | https://worldwide.espacenet.com/patent/search?q=CN105763985 | CN | | Plasma headphone |
Patent | Electron tube ionic loudspeaker | | Zhang Zaifei | Plasma | | 2017 | | | | CN205902064 | https://worldwide.espacenet.com/patent/search?q=CN205902064 | CN | | Basic plasma speaker valve amplifier |
Patent | Electroacoustic transducer | | Yu Akino | Plasma | | 2017 | | | | JP6099143 | https://worldwide.espacenet.com/patent/search?q=JP6099143 | JP | | Plasma speaker |
Patent | Microwave plasma loudspeaker | | Fu Wenjie | Plasma | | 2018 | | | | CN107948895 | https://worldwide.espacenet.com/patent/search?q=CN107948895 | CN | | Microwave generated plasma |
Patent | Improved plasma loudspeaker | | Hu Zhenqiang | Plasma | | 2019 | | | | CN110430515 | https://worldwide.espacenet.com/patent/search?q=CN110430515 | CN | | Circular arrangement of plasmas |
Patent | Electroacoustic transducer having controlled ion generation | | Chyzhov Maksym Viktorovich | Corona | Mid/Tweeter | 2019 | | | | US9445202 | https://worldwide.espacenet.com/patent/search?q=US9445202 | US | Copra Acoustic | Corona wind, WaveIon |
Patent | Axial electric field electroacoustic transducer | | Chyzhov Maksym Viktorovich | Corona | Mid/Tweeter | 2019 | | | | WO2019069289 | https://worldwide.espacenet.com/patent/search?q=WO2019069289 | WO | Copra Acoustic | Corona wind, WaveIon |
Patent | Electronic effects device and method | | Ilja Krumins, Martins Melkis, Kristaps Kalva | Plasma | | 2019 | | | | WO2019135196 | https://worldwide.espacenet.com/patent/search?q=WO2019135196 | WO | | Plasma in a gas discharge tube |
Patent | System and Method for Acoustic to Electronic Transduction | | Johan Carlsson | Plasma | Mic | 2020 | | | | US201862627839 | https://worldwide.espacenet.com/patent/search?q=US201862627839 | US | | Plasma microphone for structural listening |
Patent | Plasma speaker | | Gilligan | Plasma | Full | 2020 | | | | EP3513576 | https://worldwide.espacenet.com/patent/search?q=EP3513576 | EP | | Multiple small plasma tweeters to create a full-range plasma |
Patent | Tunable electrostatic ion and fluid flow generator and electroacoustic transducer | | Subrahmanyam Desaraju | Corona | | 2022 | | | | US11273465 | https://worldwide.espacenet.com/patent/search?q=US11273465 | US | | Corona wind speaker, detailed but nothing new |
Patent | Plasma Based Noise Reduction System | | Sergeev Stanislav, Lissek Herve,Volery Maxime | Corona | | 2023 | | | | EP4116967 | https://worldwide.espacenet.com/patent/search?q=EP4116967 | EP | | Corona Wind Speaker used for Noise Reduction |
Pictures | Kathodofon (kathodophone) | Radio Museum | | Plasma | Mic | 2200 | | | | | https://www.radiomuseum.org/r/lorenz_kathodofon.html | | | Kathodofon (kathodophone) pictures |
Pictures | Ion plasma Corona Wind Loudspeaker | DIY Audio | | | | 2200 | | | | | https://www.diyaudio.dk/2012/09/ionplasmacorona-wind-loudspeaker.html | | | Some nice pics |
Pictures | B&W P2H | CharlieStudio | | Plasma | Tweeter | 2200 | | | | | https://www.facebook.com/CharlieStudioAudio/posts/3529891000469481/ | | Bowers & Wilkins | Full pics of the B&W P2H with Fane 601 Ionophone |
Theoretical | Corona Wind Loudspeaker | | Dr. David M.Tombs | Corona | Full | 1955 | | | | | http://duckduckgo.com/Corona Wind Loudspeaker Dr. David M.Tombs | UK | (later worked for Hoover!) | Prototypes only, Gerald Shirley (Televex Co.) tried to develop it. |
Theoretical | STL Ionophone | | Fransson F. | Plasma | | 1965 | | | | | http://duckduckgo.com/STL Ionophone Fransson F. | | KTH Computer Science | Used for acoustic measurement |
Theoretical | Flame Loudspeaker, Talking Flame | | Dr. A. G. Cattaneo | Flame | | 1968 | | | | | https://massless.info/images/Popular%20Electronics%20May%201968%2031401532-Flame-Amplification.pdf | | United Technology Center, UTC | Electrodes in a welding torch flame modulating it Wayne Babcock,K. L. Baker |
Theoretical | A plasma driver | | Albert Von Schweikert | Plasma | | 1970 | | | | | http://duckduckgo.com/A plasma driver Albert Von Schweikert | | Cal Tech (uni) | Developed for a US company? Dr. Richard Heyser |
Theoretical | Force-field Speaker | | John Gordon Iverson | Corona | Full | 1973 | | | | | http://duckduckgo.com/Force-field Speaker John Gordon Iverson | US | Electro Research then Electron Kinetics | Based on Tombs' corona wind |
Theoretical | Ionophone | | Ostroumov, G A | Corona | | 1979 | | | | | http://duckduckgo.com/Ionophone Ostroumov, G A | RU | | Russian prof, ring arrangement |
Theoretical | Ion Cloud Panel | | Nelson Pass | Corona | Full | 1980 | | | | | http://duckduckgo.com/Ion Cloud Panel Nelson Pass | US | Threshold Audio Inc. | Prototype corona wind wire based panel |
Theoretical | Ionophonic headphone | | Gregor Antes | Plasma | Full | 1980 | | | | | http://www.laborantes.com/iono2.htm | SW | Laborantes | Plasma headphones with Guido Melliger. |
Theoretical | Push pull corona prototype | | Alain Deraedt | Corona | | 1987 | | | | | http://duckduckgo.com/Push pull corona prototype Alain Deraedt | FR | | Patent FR2588710, Science&Vie High Tech Article Pascal Freulon |
Theoretical | Tolteque | | Jean-Claude Fourriere | Plasma | | 1990 | | | | | http://duckduckgo.com/Tolteque Jean-Claude Fourriere | FR | AHL (Acieries du Haut Languedoc) | Demoed at trade shows. Tolteques sold were ESL Ran the Plasmasonic Company, Audio reference |
Theoretical | SDP 001 | | Credo | Plasma | Tweeter | 1996 | | | | | http://duckduckgo.com/SDP 001 Credo | | Credo Audio AG | Demoed at Ramada by Townshend Audio, a late Ionophone clone Vinzenz von Tscharner |
Theoretical | EFA Loudspeaker | | Igor A. Krichtafovitch, Et.Al | Corona | Full | 2008 | | | | | http://www.electrostatics.org/images/ESA_2008_A2.pdf | RU | Kronos Air Technologies | A classic corona wind design detailed, Company now closed |
Theoretical | Waveion | | Maxim Chizhov, Iskender Dzhanagayev | Corona | Mid/Tweeter | 2014 | | | | | https://www.waveion.net/ | UA | Waveion, Copra Acoustic | Sought funding, demoed at CES etc. Vitali https://www.copra-acoustic.com/ |
Theoretical | Sonarc | | Paul Gilligan | Plasma | Full | 2016 | | | | | http://sonarcinnovations.com/ | IR | Sonarc Innovations | Multiple small plasmas to create a full range plasma speaker Sorcha O'Brien |
Theoretical | Ionomax (Lonomax) | | Jianxing Cai | Plasma | Full | 2017 | | | | | https://www.geeky-gadgets.com/lonomax-plasma-speaker-30-03-2017/ | | Cloudsound | Kickstarter (not funded), exists only as CGI renders of desktop stereo plasma |
Video | Viger Audio | Aparat | Viger | Plasma | | 2200 | | | | | https://www.aparat.com/v/tz1r8/Electric-Arc_Loudspeaker_%28ionophone%2C_plasma_speaker%29 | | Viger Audio, Plasma Voice | Viger Audio video |
Video | The Hill Plasmatronic demo | Youtube | Tony Salsich | Plasma | Mid/Tweeter | 2200 | | | | | https://www.youtube.com/watch?v=U20nYc8JSc0&t=216s | | | The Hill Plasmatronic being demonstrated |
Video | Non-hifi use of plasma | Youtube | Franzoli | Plasma | Music | 2200 | | | | | https://www.youtube.com/channel/UCLsUeooHSJlE_5xL4BPQIOQ | | Franzoli Electronics | A video channel which shows the non-hifi use of plasma well |
Video | What is a plasma tweeter | Youtube | Paul Mcgowan | Plasma | Tweeter | 2200 | | | | | https://www.youtube.com/watch?v=-L_039xLSzw | | PS Audio | What is a plasma tweeter |
Video | Nelson Pass interview | Youtube | Steve Guttenberg | Corona | Full | 2200 | | | | | https://www.youtube.com/watch?v=msE14cWTwKI | | Audiophiliac | Nelson Pass Youtube interview |
Video | Excellent explanation of discharges | Youtube | | Plasma | | 2200 | | | | | https://www.youtube.com/watch?v=0Pl5qBajPLk | | See the pattern | Excellent explanation of discharges from See the Pattern |
Video | YouTube videos for plasmaspeaker.de | Youtube | Ulrich Haumann | Plasma | Tweeter | 2200 | | | | | https://www.youtube.com/channel/UCF3J4LVij0vRYp6Mgbx1QwQ/videos | | | YouTube videos for plasmaspeaker.de (above) with great detail |
Video | | Youtube | Alan Hill, Tony Silsich, Tom Martin | Plasma | Tweeter | 2200 | | | | | https://youtu.be/aeMCBb_Fo78 | | The Absolute Sound | Decent long video on the Hill Plasmatronic 2023 demo |
Web Article | Lo Ionophone | | Diego Barone | Plasma | Tweeter | 2200 | | | | | http://www.diegobarone.it/storico/Ionophone.htm | | | Italian DIY Version of Klein Ionophone |
Web Article | ExcelPhysics Kickstarter | Kickstarter | | | | 2200 | | | | | https://www.kickstarter.com/projects/excelphysics/the-arc-plasma-speaker | | ExcelPhysics | ExcelPhysics Kickstarter (2014, main site now gone) |
Web Article | Plasma speaker | Wikipedia | | | | 2200 | | | | | https://en.wikipedia.org/wiki/Plasma_speaker | | | Wikipedia s main section, varies in accuracy |
Web Article | Full History and info on Ionovacs | | Roger Russell | Plasma | Tweeter | 2200 | | | | | http://www.roger-russell.com/ionovac/ionovac.htm | | | Full History and info on Ionovacs |
Web Article | Vaughn Plasma II New-Plasma Tweeter | Audiogon | | Plasma | Tweeter | 2200 | | | | | https://www.audiogon.com/listings/full-range-vaughn-plasma-ii-new-plasma-tweeter-2016-04-15-speakers-94552-castro-valley-ca | | Vaugn Loudspeakers | Vaughn Plasma II review |
Web Article | Plasma Singing Foggy Perspectives of Ionophones | Sudonull | | Plasma | Tweeter | 2200 | | | | | https://sudonull.com/post/20230-Plasma-Singing-Foggy-Perspectives-of-Ionophones | | | A nice plasma article |
Web Article | The Once and Future Tweeter | | Bill Leebens | | | 2200 | | | | | https://www.psaudio.com/copper/article/the-once-and-future-tweeter/ | | PS Audio | A nice overview article |
Web Article | Massless Speakers | Everything2 | | | | 2200 | | | | | https://everything2.com/title/Massless+Speakers | | | A brief general and inaccurate info page |
Web Article | The Art of Speaker Design | Nutshell Hifi | Lynn Olson | | | 2200 | | | | | http://www.nutshellhifi.com/library/speaker-design1.html | | | Some info on plasma speakers at the bottom |
Web Article | This page contains some plasma loudspeaker history | | Jay Philippbar | Plasma | Tweeter | 2200 | | | | | https://web.archive.org/web/20030320083046/members.cox.net/jayphil/plasma.html | | | A dead site with some nice old info |
Web Article | Magnat Plasma Technology | | Colin Joye | Plasma | Tweeter | 2200 | | | | | http://magnat.tv/n4.shtml | | MIT | Old page on a diy Magnat clone |
Web Article | Arcophone | Perth Artifactory | | Plasma | Music | 2010 | | | | | https://wiki.artifactory.org.au/en/projects/arcophone | | | An interesting version of plasma jacobs ladders (polyplasmic!) |
Web Article | Electrovoice Ionovac loudspeaker | Science Museum Group | West, R | Plasma | Tweeter | 2200 | | | | | https://collection.sciencemuseumgroup.org.uk/objects/co35774/electrovoice-ionovac-loudspeaker-loudspeaker | | | Where a real Ionovac is located |
Website | A very good but dead site | ionovac.com | Jack Podplesky | Plasma | Tweeter | 2200 | | | | | https://web.archive.org/web/20130603070617/http://ionovac.com/ | | | A very good but dead site, link to the wayback machine |
Website | Plasma Tweeter site (old Plasma Speaker) | | Ulrich Haumann | Plasma | Tweeter | 2200 | | | | | http://www.plasmatweeter.de/ | | | Old (but different) version of above |
Website | Plasmaton | Plasma Speaker | Ulrich Haumann | Plasma | Tweeter | 2200 | | | | | https://plasmaspeaker.de/index.html | | | Top site |