Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: Oddvar on July 02, 2016, 01:04:50 pm

Title: views on tonstack 5f6a
Post by: Oddvar on July 02, 2016, 01:04:50 pm

Hi.  Anyone with a view on how to construct the the tonestack on a 5f6a?  I have gone down to 47pf on the treblecap and it seems like a lot of the harsh tones on the b and e-string isn't so audible. I use Scumback 55hz A55's, GT 6l6hycp's Rca nos 12ax7, and Mullard nos gz34 as rectifier.  What about the bass and middlecap? 

Title: Re: views on tonstack 5f6a
Post by: labb on July 02, 2016, 01:20:24 pm

maybe this helps:  https://www.ampbooks.com/mobile/classic-circuits/bassman-tonestack-intro/ (https://www.ampbooks.com/mobile/classic-circuits/bassman-tonestack-intro/)


Be sure to check the Marshall mods.