Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: jcm-jmp on April 27, 2019, 02:39:00 pm
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Ok guys have not posted here in a while but need someone with mad amp tweaking abilities to confirm my thoughts. So I came to you guys as you all are the best!
As you probably know the tsl60 has a parallel effects loop. I want to make it a switchable series/ parallel loop. Sooo........
Referring to the main board schematic I would lift R106 lead closest to R125 and place a spst switch in this position and replace R107 with a 50k pot to allow for efx return level adjustment.
I know with the switch in the open position that there must be a path in place on the efx loop send and return Jack's to maintain a signal path or I will loose all preamp signal to the power section.
So does this sound like it would work?
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Did you ever try this? Looks like cutting a leg on R106 would kill the dry signal and you would have a serial loop going through R107, with the effects level pot acting like another master volume.