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Old 20th January 2013, 09:08 PM   #21
Zen Mod is offline Zen Mod  Serbia
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I am happy to announce ......

That's my Pa !
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Old 21st January 2013, 02:35 AM   #22
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Nelson cool article !

Just one question --- in the poster attached to your article ... is that the same Morgan Jones from england who writes about valves ?

Perhaps he was on his way up in the "entertainment industry" when he crossed paths with R Corman
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Old 21st January 2013, 02:38 AM   #23
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I'm wondering why the dissipation per JFET is so low. The number of JFETs could be cut in half. Is it a distortion sweet spot?
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Old 21st January 2013, 02:57 AM   #24
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He's gone CRAZY!

Amps with two devices...amps with 2,000 devices. Which is it, spits or swallows..

I love it!

Nice work, Pass.

BTW, that's the cleanest distortion waveform I've ever seen. Like something from a textbook where you use only ideal parts.
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Old 21st January 2013, 07:43 AM   #25
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So to get a similar amp with 5W output only needs 500 ish jfets total. This comes in at under 200 - cheap as chips
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Old 21st January 2013, 04:26 PM   #26
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Old 21st January 2013, 04:54 PM   #27
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That's my Pa !
What Da Ya Mean? Papa finally adopted ZM !!!
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Old 21st January 2013, 05:26 PM   #28
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So to get a similar amp with 5W output only needs 500 ish jfets total. This comes in at under 200 - cheap as chips
We could also use a transformer before one of the driving cell to reverse its phase so that we could use only 2sk170s a'la F6
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Old 21st January 2013, 05:44 PM   #29
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The buffer for the xfrmr will benifit from the comp buffer driving it. Still gonna need some P's! But that bXfrmr should drive many cells!
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Old 21st January 2013, 08:48 PM   #30
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This looks like a crazy build. Would love to make something similar.

I have a few questions.

Would this work with an unbalanced source?
Is there just 1 single 1K resistor feeding all of the JFETs, or does each cell have one each?
Are there alternative JFETs that could be used which are cheaper and more available?
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