Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: J Rindt on November 29, 2010, 11:43:51 pm

Title: Fender grid caps
Post by: J Rindt on November 29, 2010, 11:43:51 pm

Each 6V6 grid has a 1200pf cap to ground. Can you guys tell me what they do exactly...?
Thank You

http://www.el34world.com/charts/Schematics/files/fender/deluxe_reverb_boost_schem.pdf

Title: Re: Fender grid caps
Post by: chocopower on November 30, 2010, 02:48:15 am

Some kind of cure for oscillations.
Those caps send to ground the high treble frecuencies.
With a clean layout, they are not necesary in that amp.

Title: Re: Fender grid caps
Post by: LooseChange on November 30, 2010, 05:35:42 am

When working on an amp that has these, I usually lift one at a time to see if I can remove them. So far I have not had an amp that had a problem with these removed. (So far.)