• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

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The TJ/Fullmusic-205D tubes I had bought 8 or 9 years ago bias up quite a bit differently than what the plate curves in that link portray. They seem to match the curves published for the 10 more so than they do for the WE 205D.

I intend to use the 205D replica from Sophia Electric, hoping that they are closer to the originals. Has anyone tried them for rectification?
 
Goes by the name of Jackal

This is my new Tube preamplifier .
3 tubes ( two PCF200 and one EF183 ) on each channel , -3dB at 400KHz , gain 19.4dB .
 

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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.:)
That has got be one of the best looking amps I've ever seen, be it diy or production model. Great design
 
Disabled Account
Joined 2004
It's art! A slight blur creates an aura of mystique. I use it all the time, because it also hides the imperfections of my chassis & finish work! :violin:

Haha, you got me. No flash, that sucker is unforgiving. Long exposure and no tripod. Never crossed my mind to take a good picture BTW. The background is awful.

faux rust finish throughout.
Yeah, I'm into that. Actually, it's oil paint on a metal chassis. There's some red too... a touch here and there. The finish looks great, the amp is junk though.

* Another example how to maximize distortion to make things look good.
 

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Disabled Account
Joined 2004
Well, it's a basement so not much light and, as I said before, the flash from this camera is no good. Anyway, here's something slightly better. Needless to say the ring of diamonds is a joke, actually the whole amp is a bit of a joke. My serious amps are upstairs.
 

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