Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: Wanabejimi on July 09, 2018, 08:25:22 am
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I have two problems with a revibe build. First, the reverb section is overdriven with humbuckers. It sounds great with a strat, but I get this "splatty" unwanted/distortion when I play it with humbuckers. The amount of distortion is controlled by the pick attack..from almost none to a substantial amount. For what it's worth...the humbuckers are not particularly hot pickups. It makes me wonder if its the additional low end rather than the fact that the pickups are a bit hotter than single coils. Second problem...turning the trem off gives a ugly pop. Any thoughts on fixes for this?
Thanks!!!!!David
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Which schematic did you follow? The Dwell control should prevent overdriving the reverb circuit. I added a Level pot to the dry/trem signal path that allows you to compensate for hot pickups. Very easy mod to the Hoffman Revibe.
As for the ugly pop... I'm assuming you mean turning off with a footswitch? Did you use a proper footswitch cable, ie, reverb switch must have a shielded cable, trem does not have to be shielded? Hoffman sells the proper cable. I switch my trem differently than Hoffman, but not because I was having ugly pops. I just wanted the oscillator to be running continuously. You can see my circuit changes here...
http://sluckeyamps.com/revibe/revibe.pdf
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Thanks! I really appreciate the link and the info in it. I'll try those tweaks. Maybe if I can reduce the gain a little, I can avoid "level" control....I don't really have room for it at this point, but I could wire in a resistor to bleed off some signal if I have to.
I'm pretty sure that I have the right cable on the foot switch, but I'll look into that. I'll try grounding it with a jumper wire and see what happens.
Thanks again!!!