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Old May 11th, 2008, 05:15 PM   #1 (permalink)
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some Princeton Reverb wiring help....

Kind of stuck. I'm having a tough time reading the AA1164 circuit layout I have in hand, it's very blurry, if any of you learned fellow could offer a hand....

-off the #1 pin of the second 12AX7 tube (then the reverb pot on the other side), at +160V, it comes to the circuit board at a 100K resistor and a ??? capacitor? Is that 0.02 or .003?

-off the #8 pin of the 12AT7, thats a 25V cap and a 3300 ohm resistor?

And please don't shudder at these questions...but I have some 0.22 uf yellow caps, a 223K 630V cap (DME-F CD) which I believe is a metalized poly cap (looks like it was dipped in brownish red plastic) or is that an orange drop cap? I see in some notes that the 223 orange drop cap = .02, and there are numerous places on the circuit board that calls for a .02 cap, so I'm not too sure which goes where.

-there's one more off #6 pin of the 7025. What is that cap's value?

Thanks in advance!

So far...

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Old May 11th, 2008, 06:35 PM   #2 (permalink)
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Woo hoo! Someone sent me a very, very clear and easily readible schematic! Back to the soldering gun!
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Old May 11th, 2008, 06:39 PM   #3 (permalink)
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I was just playing my BF Princeton head clone, modded for adjustable bias and 6L6's...

PR's are great amps. Let us know how the difference between SF and BF. From what I hear it's not much, but that's the fun of home experimentation!

Very cool photo by the way.
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Old May 11th, 2008, 07:12 PM   #4 (permalink)
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Yeah, I quite liked the tone of the Princeton but wanted a tad more gain. I was looking at all these gain mods then figured just go for the Princeton Reverb circuit and be done with it. Apparently they have quite abit more gain. I'll let you know!
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