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Hoffman Amps Forum image Author Topic: Minor problems with Revibe  (Read 1732 times)

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Offline Wanabejimi

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Minor problems with Revibe
« on: July 09, 2018, 08:25:22 am »
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

Offline sluckey

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Re: Minor problems with Revibe
« Reply #1 on: July 09, 2018, 08:58:32 am »
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

A schematic, layout, and hi-rez pics are very useful for troubleshooting your amp. Don't wait to be asked. JUST DO IT!

Offline Wanabejimi

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Re: Minor problems with Revibe
« Reply #2 on: July 09, 2018, 10:22:17 am »
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!!!

 


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