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True Compactron Tube Amplifier - Parts Express Project Gallery
http://projectgallery.parts-express.com/speaker-projects/true-compactron-tube-amplifier/
The design of the amplifier was inspired by the work done by O.H. Schade of RCA in 1938, P.Millet and D. Berning with their work on using TV tubes from the 60’s and designing them into audio power amplifiers. I decided on a design that used all Compactron tubes because they were cheap, thus a True Compactron Tube Amp design.
DIY Audio Projects Forum • Compactron Amplifier pp 33GY7A
https://diyaudioprojects.com/Forum/viewtopic.php?t=3482
With the compactron design you will be stuck with NOS tubes and probably not a lot of choices. My experience with tubes that were designed for horizontal deflection in TVs is that they are not really suitable for anything else. They can be used for audio, but they don't seem to perform as well as ones designed for audio.
Compactron Tubes: A Junkbox Guide
http://www.junkbox.com/electronics/CompactronTubesIndex.shtml
Compactron amp... LIVES! | diyAudio
https://www.diyaudio.com/community/threads/compactron-amp-lives.177595/
The 12 pin Compactron tubes were designed for TV sets. Some of the bigger sweep tubes were used in big audio amps lick the Macintosh MI-350. Some versions were used to near extinction in ham and CB linear amplifiers. Those tubes are expensive today.
Compactron "AA3" AM tube radio
http://www.wa2ise.com/netcom/Compactron%20'AA3'%20AM%20tube%20radio.html
Compactrons and what they were used for: 11AR11 twin pentode (both semi-remote cutoff), mixer and IF amp 8B10 twin triode - twin diode, local oscillator, first audio amp, and detector/AVC diode. Second diode grounded. 38HK7 pentode diode, audio output amp and power rectifier. See notes below the diagram.
Compactron Tube 6AF11 NOS (Valve) - Zeppelin Design …
https://zeppelindesignlabs.com/product/compactron-tube-6af11/
Multi-Function Compactrons Promise Two-Tube Radio ...
https://www.electronicdesign.com/technologies/4g/article/21770720/multifunction-compactrons-promise-twotube-radio
Mini-Tube Audio Amplifier - Part 1 - Electron Bunker
http://electronbunker.ca/eb/TubeAudio_01a.html
A discussion came up on one of the news groups some time ago about building the smallest (or simplest) push-pull tube audio amplifier. This got me thinking about making a one tube push pull amplifier (two tubes for stereo). I had a few 6M11 Compactron tubes on hand that I previously used to build this AM transmitter. These tubes have a pentode ...
VinylSavor: Tube of the Month : The 6GE5 - Blogger
https://vinylsavor.blogspot.com/2014/10/tube-of-month-6ge5.html
Quite a few 6CB5A amps have been built around the globe since then. In the 1960ies General Electric introduced the compactron tubes with 12 pin bases. This class of tubes was intended to rival the transistor which started to replace vacuum tubes. With the 12 pins more systems could be integrated into a single bulb.
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