problem with twin reverb reissue

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problem with twin reverb reissue

Postby GratefulPat » Thu Mar 06, 2008 8:49 am

HELP! i have a fender twin rev 65 reissue and its making some awful noises. its like a hissing as, or after i hit a note. i took it to local shop and they plugged in and i didnt hear it one time, but almost every note i hit i hear it. it goes off an on. and we though it was a bad outlet becuz i play in my basement, but we ran an extension cord from upstairs to my room and it did the same thing, just less frequently PLEASE!
Comes a time, when the blind man takes your hand and says "dont you see?"
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Postby strumminsix » Thu Mar 06, 2008 9:35 am

sounds like it may be parasitic oscillation.

many RIs have this problem which is why i advocate against.

not much you can do without investing $$$.
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Postby amyjared » Thu Mar 06, 2008 9:38 am

First off, not sure why you posted in tune submissions, but it must be because this problem has you totally rattled :-)

I'm no expert, but here's something to start with: take the amp to another location (friend's house, work, etc.) and try it there. This will tell you if the problem is your amp or your house's electrical wiring. Also, try another guitar both at your home and at another location, because sometimes it's the pick-ups or something in the guitar. This way, you can at least narrow it down and make sure it's the amp. I had a similar problem and it was the reastat (sp?) lighting in my house and the single coil pickups. Hope this is some help.
"The only funeral you should ever try to interrupt is your own, and that should be a full-time job." -Kinky Friedman
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Postby SpaceYrface43 » Thu Mar 06, 2008 10:13 am

I had a problem with my twin making a loud noise but it was really loud sounded like a fucking bomb going off. This happened right after i left the music shop with it was brand new. Took it to an amp specialist and it was a bad pre amp tube. Maybe this will help.
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Postby Laytonco » Thu Mar 06, 2008 3:25 pm

ALSO - Obviusly there could be many things; Before i sold mine, I started having this lous popping sound. Then no sound. Then it owuld come back on and be fine and then mess up again. It was a bad jack from the amp to the speaker box. Apparently that's a common flaw in the Reissues.
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Postby I'm on the Bozo Bus » Thu Mar 06, 2008 3:44 pm

Hijack Warning!!!!

Parasitic Oscillation.... I have dibs on that as a band name...
I love it SS....
Off to research what a parasitic Oscillation is....
PEACE,
Phil
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Postby I'm on the Bozo Bus » Thu Mar 06, 2008 4:33 pm

A malfunction occurring in some amplifier circuits, in which the device will feed back upon itself internally. The possible causes of this are numerous and can be complex (beyond the scope of a Word For The Day). In audio equipment, this may generate an ultrasonic signal that will occur only when an input signal is present and generally only during part of the audio waveform. Although the ultrasonic component isn't directly audible, its existence modulates the signal causing audible distortion, and is potentially damaging to tweeters. Tube amp circuits tend to be prone to more different variations of this phenomenon than most solid-state designs. Most modern audio amp designs incorporate circuitry to prevent this problem to the extent that it's generally not much of a concern these days.

Now I know....
I still think it is good band name...
PEACE,
Phil
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Postby TC/derelicks » Sat Jun 28, 2008 8:41 am

Check the tubes though it may be a connection problem. I'd take it to someone in the know and let them have a look--TC
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Postby willmusic » Sat Jun 28, 2008 9:55 am

I'd had problem after problem with my Super Reverb reissue until I just broke down, sold it as is and bought an original silverface with a blackface mod for much less than I paid for the reissue. It wasn't till after my own bad experience that I started hearing other folks with similar stories. Sorry to hear that your dealing with the reissue problems, too.
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