The 50lb Debutante
The latest debutante to come out: the D3a-driven 300B amplifier. I know she's not much in the looks department, but she sure is heavy!
This is my second audio project. The mains transformer is from an old HP signal generator. The design loosely follows the new reference 300B amplifier. (Though if you try it, note that the D3a wiring is not correct in the schematic.)
She'll be joining her older brother, the headphone amp: http://www.diyaudio.com/forums/tubes-valves/71300-photo-gallery-357.html#post2653449 . Notice the family resemblance?
The latest debutante to come out: the D3a-driven 300B amplifier. I know she's not much in the looks department, but she sure is heavy!
This is my second audio project. The mains transformer is from an old HP signal generator. The design loosely follows the new reference 300B amplifier. (Though if you try it, note that the D3a wiring is not correct in the schematic.)
She'll be joining her older brother, the headphone amp: http://www.diyaudio.com/forums/tubes-valves/71300-photo-gallery-357.html#post2653449 . Notice the family resemblance?
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My iTube amp, finally
I finally finished my iTube amp. It's a stereo amp based on the 60FX5. I came across a schematic in the RCA tube manual and a push-pull single channel amp at Adam's My Vacuum Tube Amplifier Page.
I finally finished my iTube amp. It's a stereo amp based on the 60FX5. I came across a schematic in the RCA tube manual and a push-pull single channel amp at Adam's My Vacuum Tube Amplifier Page.
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You are Michellangelo Buonaroti
The quallity of your finish is like art.
Amazing and beatifull.
The quallity of your finish is like art.
Amazing and beatifull.
The quallity of your finish is like art.
Amazing and beatifull.
Hello
Thank you very much.
With respect to you, Alexander.
6V6 ST bottled push-pull amp....
just finished today, playing Rubber Soul album by the Beatles:
6922 buffer as first stage, 6BH11 pentode, dual triode in LTP drive....a Mullard 520 configuration.....
3DG4 full wave rectifier complimented by 1N4007 silicon rects.....
the 6V6 st bottles wer made by Penta-Labs....
just finished today, playing Rubber Soul album by the Beatles:
6922 buffer as first stage, 6BH11 pentode, dual triode in LTP drive....a Mullard 520 configuration.....
3DG4 full wave rectifier complimented by 1N4007 silicon rects.....
the 6V6 st bottles wer made by Penta-Labs....
I saw your 6EM7 paris amp on the blog!
nice.
how do you get 2W out of a 6EM7?
I've stuggled to get 1,5W
any chance of posting the diagram?
thanks!
6EM7 driven 300B and a single tube 6EM7
Postman Pat and Dark Fader
anyone want to listen?
they're here:
GP Audio - Home
Postman Pat and Dark Fader
anyone want to listen?
they're here:
GP Audio - Home
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Head1962: Nice looking amps and I see some Hammond iron. The red amps have open frame trannis, what are they, OPTs and who makes them? We all have a different twist on life and builds but I would be casing the open frame stuff. In your case, because the amps are so nice, personally I think it detracts a bit.
After saying that they look like industrial controllers, I like the gutsy appearance. And 5EM7 driving other tubes???? Outta my league.
Here is the Paris schematic designed by Matt of Seattle. He also designed the Silver Dragon (300B) and two of the 4S series of single tube preamps. I'm about to build his 807 design. I don't think I posted Paris Duo (Paris monoblocks) so I'll do that next.
Note: The 820ohm resistor in the PS, make it 1.1K 5W.
After saying that they look like industrial controllers, I like the gutsy appearance. And 5EM7 driving other tubes???? Outta my league.
Here is the Paris schematic designed by Matt of Seattle. He also designed the Silver Dragon (300B) and two of the 4S series of single tube preamps. I'm about to build his 807 design. I don't think I posted Paris Duo (Paris monoblocks) so I'll do that next.
Note: The 820ohm resistor in the PS, make it 1.1K 5W.
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no, i just painted the end-bells blue.......all irons were hand built by me, including 2 chokes underneath.....
thanks!!
I'll have allo at the diagramms in a second.
here's the red amp with it's covers on.
Jörg Ritter in Germany makes all the transformers.
you can specify exactly what you like and he winds them.
they sound nicer then the hammond ones.
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