[sdiy] sort of OT: tube amp optimization for power tube distortion

[John L Marshall]

Anthony,

It seem to me that if you want the typical power tube distortion that you 
would want a pair of EL84s operating push-pull biased to operate in some 
variation of Class B (B2?). A single output tube will generally be biased to 
operate Class A. The harmonic content will be different.

There are several tube gurus on this list.

Take care,
John
www.sound-photo.com
www.antenna-farm.com

----- Original Message ----- 
From: "anthony" <aankrom at bluemarble.net>
To: "Synth" <synth-diy at dropmix.xs4all.nl>
Sent: Friday, November 17, 2006 10:40 AM
Subject: [sdiy] sort of OT: tube amp optimization for power tube distortion


> I've read this before but can't find it. I'm building another amp: one 
> with 2 12AX7A's and an EL84.
>
> I want the amp to have mostly power tube distortion. Want I need to 
> remember is how to optimize the preamp to get such. Do you use higher 
> plate voltage and less gain per stage? One of the 12AX7A stages is a 
> cathode follower.
>
>
> aa
>