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The VK1SV 6J5/807 audio amplifier
https://people.physics.anu.edu.au/~dxt103/audio/807/
The 807 has always been my favourite valve. I have used it on a number of RF transmitters and modulators and I thought it was only fair if my hi-fi audio amplifier uses it too. There are plenty of good designs out there showing different audio amplifiers using 807. The Williamson design is a famous instance. My desire was to design something simple from scratch, so I turned to the …
Single-Ended 807 Amplifier | Evil Science Audio
https://evilscienceaudio.com/2014/05/27/updated-single-ended-807/
Single-Ended 807 Amplifier. This amplifier was built on-the-cheap. I used salvaged transformers purchased well below online prices and 807 tubes which are still reasonably priced. 7 watts per channel. I won an impromptu local “shootout” with this. Recently added speaker/headphone switch and headphone jack. Now it’s personal!
"807" Push-Pull amp - Pete Millett's DIY Audio pages
http://www.pmillett.com/807pp_amp.htm
DIY Audio Home. "807" Push-Pull amp (5B/254M tubes driven by thePush-Pull driver board) (Click on the photos for full-size images) This is a pair of monoblock amplifiers that I built using the Push-Pulldriver boards (described in more detail here). I used a push-pull-parallel set of 5B/854M tubes, which are basically 807tubes in a slim bottle with a loctal base.
807 Tube Audio Amplifier Schematic - squaredfasr
https://squaredfasr687.weebly.com/807-tube-audio-amplifier-schematic.html
The audio power would increase or decrease the amplitude of the RF envelope. The 807 was also a workhorse of the HF bands. As a transmitter power amplifier (shown in the lower table) operating in class C producing 40 Watts of RF, it would need a pair of 807's in push pull to generate the 20 Watts of audio required to fully modulate the valve.
807 Tube Audio Amplifier Schematic - badfasr
https://badfasr337.weebly.com/blog/807-tube-audio-amplifier-schematic
The 807 is a beam tetrodevacuum tube, widely used in audio- and radio-frequency power amplifier applications. Audio uses [ edit ] 807s were used in audio power amplifiers, both for public address and Hi-Fi application, usually being run in push-pull pairs in class AB1 or AB2 giving up to 120 watts of usable power.
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