Here ya go guys, a place to share pictures and a brief explanation of your favorite amp or latest project. For discussion or an in-depth writeup, let's post at the Discussion Thread. Hope this will suffice- Who's gonna start things off? (again)
Valco P-P
Guess I'll keep the ball rolling- This is my second attempt and current finished amp, based on a '40s PA design by Valco. Typical 6L6 PP. IIRC, the xformers are 30w Hammonds. Finished this one a couple years ago and still sounds pretty good, although there's some low level hum that still drives me nuts.
Guess I'll keep the ball rolling- This is my second attempt and current finished amp, based on a '40s PA design by Valco. Typical 6L6 PP. IIRC, the xformers are 30w Hammonds. Finished this one a couple years ago and still sounds pretty good, although there's some low level hum that still drives me nuts.
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Thanks for letting me dust off the ol' amp and share! Who's next!?
Here is mine, a 300B based on JE Labs 300B DX but stereo.
RCA 76 - Hitachi 6SN7GTB - 300B (generic Chinese
tube) - RCA 5U4G rectifier
RCA 76 - Hitachi 6SN7GTB - 300B (generic Chinese
tube) - RCA 5U4G rectifierAn externally hosted image should be here but it was not working when we last tested it.
My minimal casing structure and super messy set up
An externally hosted image should be here but it was not working when we last tested it.
Here is my headamp K-501.
6Z4 retifier, 6SN7 direct couple to 6SN7s.
6Z4 retifier, 6SN7 direct couple to 6SN7s.
An externally hosted image should be here but it was not working when we last tested it.
Thought I'd throw in my brother's 6sn7/300B P-P monoblock that is finally becoming a reality. It was built in partnership with an old friend of his. Chas(my brother) was responsible for the layout and construction of the chassis(machining, veneering,etc.,), while Mike designed and prototyped the circuit.
It's made of polished aluminum plate and veneered mdf, and has hundreds of hours put into the machining, etc., (for all four units). The transformer cover is fiberglass that was laminated over a mold and will have artwork applied.
Not your everyday amp.
It's made of polished aluminum plate and veneered mdf, and has hundreds of hours put into the machining, etc., (for all four units). The transformer cover is fiberglass that was laminated over a mold and will have artwork applied.
Not your everyday amp.
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And another picture of one of the best sounding and also the vey cheapest PP penthode amp I have ever build. Had cost me about $75,- and beats every EL34 amp I have ever heard. It's completely build with military dump material wich cost about nothing. I really don't know wat I did but I never managed to build a better sounding penthode amp, even with the same tubes, better transformers and a lot more expensive parts. Just lucky I guess. It's build fully hardwired with ultrashort signal path a'la gainclone (didn't know at the time of building) and the whole thing is getting HOT HOT HOT, very HOT, every part of it, but it still work after 8 years.
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