I see that they've adopted the idea of a (IRF820) source follower for the trem. And they take the first connection for the RC network for the phase shift from the follower.
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Fender Excelsior trem circuit
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Originally posted by Tom Phillips View PostI'm surprised that there is no tremolo depth control.Building a better world (one tube amp at a time)
"I have never had to invoke a formula to fight oscillation in a guitar amp."- Enzo
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Originally posted by tubeswell View PostIts probably easy enough to add one (1M pot between the 1M 'bleed out' resistor and the 470k grid feed resistors, or replace both 470k resistors with a 500k-1M dual-ganged pot maybe)
-Sam
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Thanks Jazz P Bass! I wired the 1M pot between those resistors but quickly found out that this only decreased the depth from stock. So I went the other way: I replaced the 1M bleed out resistor with a 1M pot. Now I am able to go from stock depth to a very deep pulse!
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Hello all! hate to bring this back to life, but I recently tried out the 1M pot in place of R15, and it blew something in the trem circuit, I tried putting a new 1M resister and it still didn't work, anyone have any ideas of what else it could be? thank you!
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Originally posted by Seanwich View PostHello all! hate to bring this back to life, but I recently tried out the 1M pot in place of R15, and it blew something in the trem circuit, I tried putting a new 1M resister and it still didn't work, anyone have any ideas of what else it could be? thank you!Building a better world (one tube amp at a time)
"I have never had to invoke a formula to fight oscillation in a guitar amp."- Enzo
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That shouldn't cause the components to fail. You may have inadvertently done some damage in the modding process. Can you post hi-res pics of your amp?Building a better world (one tube amp at a time)
"I have never had to invoke a formula to fight oscillation in a guitar amp."- Enzo
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