Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: JustMike on August 25, 2020, 01:06:28 pm
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I thought I'd start a new thread even though this is an evolution of my Sears 40XL thread. I'm going to try the 1 tube verb circuit in the amp I built by sacrificing the fx loop ckt. It looks like it will work. At some point I might also go to fixed bias. Not that there's anything wrong with it now using Cathode bias, but just because I can and I like to experiment. This build for me is all about the journey and not necessarily the destination. Stay tuned!
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Maybe try this approach to the reverb using a 12DW7 where the 12AU7 triode part is the driver. Just look at the reverb section & insertion point only of this schematic.
BTW, I have an amp that had an active FX loop and now I have the passive FX loop going into a one tube reverb and like it even better.
With respect, Tubenit
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Long as you're playing you may be interested in this simple mod that allows you to switch between fixed and cathode bias.