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previous: Ricky Is there some sort of "rule of thum... -- 12/26/1999 9:38 PM

Re: cathode bias cap value

12/27/1999 4:16 PM
Benjamin Fargen	Re: cathode bias cap value Ricky, I'll give the generic low tech answer...... As you increase the value of the cathode bypass cap you allow more of the low and low/mid characteristics of the circuit to become present. How drastic the effect is depends on the circuit you are dealing with. Lowering the cathode bypass cap from 25uf to say 15uf or 10uf can really clean up the mud in the lower freq when tweaking a power amp section........but sometimes you can start to lose that fatness your looking for as well. Do some tests and decide what sounds best to your ears. A perfect example is the "Clubman" circuit....I ended up using a 10uf cap in stead of the "suggested' 250uf cap and felt the tone was much more pleasant to MY ears. Experiment and have fun with it. Benjamin

12/27/1999 4:16 PM

Benjamin Fargen

Re: cathode bias cap value

Ricky,

I'll give the generic low tech answer......

As you increase the value of the cathode bypass cap you allow more of the low and low/mid characteristics of the circuit to become present. How drastic the effect is depends on the circuit you are dealing with.
Lowering the cathode bypass cap from 25uf to say 15uf or 10uf can really clean up the mud in the lower freq when tweaking a power amp section........but sometimes you can start to lose that fatness your looking for as well.

Do some tests and decide what sounds best to your ears.

A perfect example is the "Clubman" circuit....I ended up using a 10uf cap in stead of the "suggested' 250uf cap and felt the tone was much more pleasant to MY ears.

Experiment and have fun with it.
Benjamin