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-   -   Pass Tube Amplifier (http://www.diyaudio.com/forums/pass-labs/130619-pass-tube-amplifier.html)

tryonziess 30th September 2008 11:23 AM

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

Zen Mod 30th September 2008 11:56 AM

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 ......... ?

:rofl:

(sorry Papa , I couldn't resist ...... )

gl 30th September 2008 04:43 PM

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

Nelson Pass 1st October 2008 09:22 PM

You mean light bulbs.

:cool:

Zen Mod 1st October 2008 10:05 PM

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.

:cool:

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

where is a :captain: when is needed ?

yo !
Variac !

shut this place down !!

:rofl:

gl 1st October 2008 10:45 PM

Oh come on ZM - lighten up!

Graeme

Zen Mod 1st October 2008 11:46 PM

Quote:

Originally posted by gl
Oh come on ZM - lighten up!

Graeme


how ?

I'm reading BT thread ......... :rofl:

gl 2nd October 2008 12:17 AM

I understand.

RobertHaze 3rd July 2012 04:19 AM

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.

Nelson Bass 3rd July 2012 01:55 PM

What about a tube driven circlotron made with SITs? That would be something. :-D


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