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RE: 6V6 PP Line Amp/PPP Power Amp Schematics (Kondo HOH-OH)

Posted by sser2 (A) on May 19, 2017 at 19:00:13

In Reply to: 6V6 PP Line Amp/PPP Power Amp Schematics (Kondo HOH-OH) posted by chrismercurio on May 17, 2017 at 17:35:04:

Hammond Organ developed a PPP amp with 6V6 in late 1930 as replacement for PPP amp with 2A3 tubes, which were then falling out of fashion. You can find schematic on pp.3-41 to 3-43 of the Hammond service manual (link provided). It has differential driver and cathode feedback from OPT secondary winding, as well as impressive choke input power supply with PIO filter capacitors. I have one of those, it sounds really good.

• Hammond service manual   (Open in New Window)

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