Design parameters for feedback

[markusw]

Both resistors are involved in the low-pass, but yes with the same presence cap the frequency at which the FB voltage is reduced by 3 dB is roughly one octave lower with the 8k2 vs. 4k7.

Thanks!

Good Read..


http://www.aikenamps.com/GlobalNegativeFeedback.htm

Tony

Thanks again!

Regards,

Markus

[David Root]

I'm trying to get this straight in my head.

So, if I am in a Bluesmaster, which is 100K/4K7, then if the presence pot is 25 K and the cap 0.1 uF, or, as Henry uses, 2K5 pot with 1 uF, that is the same roll off point, right?

(I have a couple old Centralab 2K5 pots, but no 25K, on hand).