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Cathode Bypass Cap on V3
Posted: Fri Feb 07, 2020 4:08 pm
by theSeeker
The mid and late 70's preamp schematics have a dashed line indicating that some amps had this 47 nF cathode bypass cap and some didn't. Is there a particular reason when and why it was/wasn't used? What is the tonal affect of adding this?
Re: Cathode Bypass Cap on V3
Posted: Fri Feb 07, 2020 11:34 pm
by mhuss
More gain.
Re: Cathode Bypass Cap on V3
Posted: Thu Feb 20, 2020 4:59 pm
by Emiel
It seems to boosts the mid/treble frequencies. I removed the cap in a clone, prefer it without it.
Re: Cathode Bypass Cap on V3
Posted: Fri Feb 21, 2020 10:40 pm
by mhuss
You're correct, the small value restricts the gain boost to mids and up.