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Post subject: 74 Silverface Twin Reverb- reverb feedback?
Posted: Thu Mar 03, 2011 11:53 am
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hey folks, my 74 twin has a problem, hoping to gain some insight and doctor it up.

when the reverb is at 7+, there is a high pitch occurring with varying amounts of sustain. it's doesn't happen consistently, but enough to be annoying.

i play super saturated ambient rock, so i prefer my reverb stay cranked. was debating buying an reverb tank, but aside from the price, i am unsure of how the reverb would affect my tone prior to the preamp vs after it.

i have already retubed the preamp, so i assume it has to do with the tank itself.

digital is not an option.

thanks :]


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Post subject: Re: 74 Silverface Twin Reverb- reverb feedback?
Posted: Fri Mar 04, 2011 9:30 pm
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It's el tubo.Try different tubes in V3 12AT7 I think.It's the reverb driver.Having it turned up that high might be trying but the squeal can be fixed.


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Post subject: Re: 74 Silverface Twin Reverb- reverb feedback?
Posted: Sat Mar 05, 2011 8:10 am
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I just realized I put AX7's in the reverb spots.

I'll try your suggestion and get back to yall.

Thanks


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Post subject: Re: 74 Silverface Twin Reverb- reverb feedback?
Posted: Wed Mar 09, 2011 6:08 pm
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The reverb is working much better, but I am faced with a new problem:

The tremolo makes a sort of ticking at the tempo of pulse rate. Is this a cap job?


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