In article , Andy Evans
wrote:
Some discussion of voicing DIY tube amps:

Rumor has it that the Scott company brought professional musicians in
house for auditions when they were voicing the 299B.

[snip]

I wouldn't bother the -3dB point, just listen.

You seem to be responding to someone, but as you haven't quoted them, I
don't know who, or what they said...

[snip]

I generally agree with your voicing suggestion but why on earth SRPP?

As above...

[big snip]

Do you measure the stability margins, output impedance, etc, of the results
of each component change? If so, how do they relate to the changes in
'voicing' you perceive? Do you then publish these values for the final
design?

FWIW when (many years ago) I used to design amps, when I found that things
like a cap change affected the audible performance then investigation
tended to reveal something like bursts of RF instability. Hence I am
curious as to how you investigate these things and what results you have
uncovered w.r.t. correlation with factors like measured stability
performance, etc, with what you regard as 'voicing'.

Slainte,

Jim

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