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Old 30th September 2008, 11:23 AM   #1
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Default Pass Tube Amplifier

Nelson has given all of us so many great projects in the 30 plus years he has been building amps and stuff. I was just wondering if he has given any thought to designing a reasonable tube amp project.
I for one like his simple uncluttered approach to design and would trust a build with his stamp of approval on it. Tube build parts are not cheap and mistakes could set you back a long way with hobby funds being what they are.
Well Nelson any thoughts on a First Watt tube project. It fits in with the First Watt philosophy. Just think of that nice warm tube glow on a cold evening. Just a thought. Tad
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Old 30th September 2008, 11:56 AM   #2
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Default Re: Pass Tube Amplifier

Quote:
Originally posted by tryonziess
Nelson has given all of us so many great projects in the 30 plus years he has been building amps and stuff. I was just wondering if he has given any thought to designing a reasonable tube amp project.
I for one like his simple uncluttered approach to design and would trust a build with his stamp of approval on it. Tube build parts are not cheap and mistakes could set you back a long way with hobby funds being what they are.
Well Nelson any thoughts on a First Watt tube project. It fits in with the First Watt philosophy. Just think of that nice warm tube glow on a cold evening. Just a thought. Tad

who knows ...... if you bribe Papa with adequate number of cases filled with adequate sort of liquid red ..........

but - somehow I feel that you can't count on his sane approach ........
just imagine what can be found in his warehouse .......

do you wanna preamp with 4-250A ......... ?



(sorry Papa , I couldn't resist ...... )
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Old 30th September 2008, 04:43 PM   #3
gl is offline gl  United States
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As I recall, "himself" did once upon a time use vacuum tube resistive devices as CCS substitutions. It was in the Zen enlightenment project.

Graeme
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Old 1st October 2008, 09:22 PM   #4
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You mean light bulbs.

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Old 1st October 2008, 10:05 PM   #5
Zen Mod is offline Zen Mod  Serbia
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Quote:
Originally posted by gl
As I recall, "himself" did once upon a time use vacuum tube resistive devices as CCS substitutions. It was in the Zen enlightenment project.

Graeme

what's man's mind ...... I was puzzled because I missed that , from Papa ................. I didn't even think that you really confused "real thing" with :


Quote:
Originally posted by Nelson Pass
You mean light bulbs.

I'm gonna put a spell on this forum ........... mixing bulbs with toobz .....

where is a when is needed ?

yo !
Variac !

shut this place down !!

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Old 1st October 2008, 10:45 PM   #6
gl is offline gl  United States
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Oh come on ZM - lighten up!

Graeme
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Old 1st October 2008, 11:46 PM   #7
Zen Mod is offline Zen Mod  Serbia
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Quote:
Originally posted by gl
Oh come on ZM - lighten up!

Graeme

how ?

I'm reading BT thread .........
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Old 2nd October 2008, 12:17 AM   #8
gl is offline gl  United States
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I understand.
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Old 3rd July 2012, 04:19 AM   #9
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Erno Borbely did a Tube Mosfet hybrid Op-Amp using a ECC86 low voltage tube and a current-sourced source-follower output a la Pass. The design runs on +/- 24V rails. I saw the circuit on the Headwize Headphone amp site, I believe. It looks like a fun line stage idea.
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Old 3rd July 2012, 01:55 PM   #10
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What about a tube driven circlotron made with SITs? That would be something. :-D
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