SuperBee
115 posts
Mar 10, 2012
2:50 PM
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Does anyone here know the difference between the pull-boost models of the PR and the previous model? Is the boost circuit just an add-on?
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5F6H
1096 posts
Mar 10, 2012
3:55 PM
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Yes the pull-boost is just an add on, there is one resistor different in the reverb circuit too (12AT7 cathode resistor is 680ohms instead of the earlier 2200ohms), neither of these is a reason to avoid the amp.
Wiring in late 70's Fenders is not as tidy as early 70's or 60's amps, this might not manifest itself as an issue & probably won't bother you if you're not likely to poke around inside (typically less of an issue that the RI layout & many are happy enough with the RI). Princetons & Champs were never "Silverfaced" circuitry-wise, in the same way as Super Reverbs, Twins etc.
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Last Edited by on Mar 10, 2012 3:55 PM
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Rhartt1234
43 posts
Mar 10, 2012
4:14 PM
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My first amp was a push/pull Silverface Princeton. I bought it when I was 16 and knew nothing about amps. I got lucky though. I think those amps are completely underrated for harp. They are very bright amps and I always set it with the treble all the way down and the bass all the way up. I kept it for 20 years.
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SuperBee
116 posts
Mar 10, 2012
6:22 PM
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Great, that's good to know. Thanks for the info. The one I'm looking at has had a bias adjustment pot added, but that's the only modification. Yeah, I have heard the typical tone setting is bass up full, treble off.
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The Iceman
250 posts
Mar 11, 2012
7:47 AM
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I bought one of these old amps (w/out the pull-boost) at a Guitar Show in Detroit about 20 years ago. It has proven to be an excellent harmonica amp and yes, I do turn the bass up full and the treble almost off.
The amp alone works great for small to medium type gigs. I will mic it and put it through my BOSE PAS for big gigs and it sure sounds sweet.
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The Iceman
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hvyj
2251 posts
Mar 11, 2012
11:27 AM
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I have a Princeton Reverb Reissue and i also turn the bass all the way up and the treble all the way down.
To keep the amp from sounding boxy I put a set of Fender 14" tilt back legs on it. Tilting it back opens the tone up nicely. I love the tube driven reverb, too.
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