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Fender Princeton weak vibrato

Tele belly

Member
Messages
114
I've read changing a cap or a resistor can improve
This. My question is does anyone have a diagram of which one I change?
Thanks
 

mpetkus

Member
Messages
2
O.k. I am no amp tech. I had weak vibrato on my fender twin. I bought a new optocoupler, put it in, and it sounded a little better. then, I got CRAZY.

I took the old bulb and LDR (light dependent resistor).

First I cut a piece of tinfoil like a little square, 1 cm by 1cm? and then used black electrician's tape and taped it (tin foil, bright side facing bulb) around the outside (away from the LDR) and continued taping it to the LDR. I then used more small pieces of tape and sealed it off from light.

The idea (crazy) was to use the tinfoil piece to reflect light back at the LDR, to improve the effect.

I soldered it back in and:

WOW.

My Vibrato is strong clear and bright, big improvement, and much better then the new optocoupler. I actually unsoldered it, put the new optocoupler back in listened again, then put my contraption back in to make sure.

YEP.
WOW.

I dunno, give it a try? I am very very happy.
:dude
 

PGLive

True Tone will only be achieved in Heaven
Gold Supporting Member
Messages
764
The PR's that I have played had weak vibratos.. Just enough, nothing amazing.
 

mpetkus

Member
Messages
2
Yeah, O.K. I get it, well if anyone is thinking of getting a new optocoupler, give my nutso idea a try, you may be surprised. Sorry I had no advice for the PR ( I love those amps by the way, I think they sound amazing anyways).
:jo
 

pbmw

Member
Messages
6,619
My tech tells me that they all have weak vibrato.
Then he worked on mine...
Not sure why. But it is.
 




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