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  1. #1

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    Here's a BF Princeton Reverb clone with a twist.

    The preamp is straight-up PR, but the power transformer is for

    -Deluxe 65 Reverb RI
    -Deluxe 68 Reverb RI
    -Fender 30
    -Model 30
    -Tremolux
    -Vibrolux
    -Vibrolux Reverb

    Transformer info can be found here:
    https://www.hammfg.com/electronics/transformers/classic/290

    Uses 2 x EL34 glass and runs @450 plate voltage. It puts out @35 watts through a highly efficient 12" Celestion Vintage 30.

    Orange drops, cloth wire, all Hammond iron (so most likely Canadian-made), quality glass, and so forth. I'm trying to figure out who made it, but
    I had my tech (the estimable John Fletcher, here in Toronto) go through it to make sure there are no surprises, and there are ... no surprises. The "ground" switch is a standby switch.

    Then I took it out to a couple of gigs and...yup, it does exactly what one would think - bags of headroom, in a Princeton-sized package. With a Princeton voice. Through a 12" speaker with an SPL of 100 dB. And as much reverb and trem as one could ever want. Kind of a jazz player's dream compact tube amp.

    I got this as part of a trade deal, don't have much use for it, and it occurred to me that many of you would have plenty of use for it, given the Princeton Reverb love in this community. It's a really nice amp, in perfect condition. It's also easy to ship given its Princeton size. Obviously, heavier than a stock PR - @37 pounds - still quite luggable.

    So buy it, already! $1,200 + shipping.
    Attached Images Attached Images Princeton Reverb clone with a twist - "this amp really boogies!"-20190828_124029_hdr-lo-jpg Princeton Reverb clone with a twist - "this amp really boogies!"-20190828_124016-lo-jpg Princeton Reverb clone with a twist - "this amp really boogies!"-img_7522-jpg 
    Last edited by Hammertone; 04-03-2020 at 04:11 AM.

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  3. #2

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    what output transformer?

  4. #3

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    When I had my retail store back in the 70's/80's, we built something similar - stuffed a Twin in a PR box! Got the idea from a steel player/amp guru named Red Rhodes from CA. Had to put the filter cap can down on the side of the cabinet to make room for everything. Transformer was from an Ampeg V4. also added a muffin fan and an EV 12" speaker. Cute little amp and really loud. I loaned it to someone and never got it back - wish I could find it but, then I probably couldn't lift it anyway. If anybody sees a little overweight PR that says "Sugar Daddy Blues Band" on the side - it's mine!

  5. #4

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    Quote Originally Posted by jzucker
    what output transformer?
    See pix for transformer info.
    I updated the top post, with a link to the Hammond page that lists transformers and associated Fender amps, and listed the relevant amps.
    Glass includes (in order):
    -5AR4 GE NOS rectifier tube
    -2x 6CA7EH (similar to EL34) matched tubes (marked "69") from The Tube Store
    -12ax7EH
    -12ax7 - RCA NOS
    -12at7 - Delmonico - made in Japan NOS
    -12ax7EH
    Attached Images Attached Images Princeton Reverb clone with a twist - "this amp really boogies!"-img_7524-jpg Princeton Reverb clone with a twist - "this amp really boogies!"-img_7526-jpg Princeton Reverb clone with a twist - "this amp really boogies!"-img_7527-jpg 
    Last edited by Hammertone; 11-11-2019 at 10:03 PM.

  6. #5

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    Quote Originally Posted by Hammertone


    That's the Hoffman PR board and it has a 35W output transformer. You can bias for 6L6s, EL34s or 6V6s. I built two (with Weber iron), still own one and will be playing it tonight weather permitting.

    It is an ideal jazz machine -- toneful, easy grab, loud enough to gig and low visual volume for those situations where someone wants you to turn down before you plug it into the wall.

    GLWS

  7. #6

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    Quote Originally Posted by Sam Sherry
    That's the Hoffman PR board and it has a 35W output transformer. You can bias for 6L6s, EL34s or 6V6s. I built two (with Weber iron), still own one and will be playing it tonight weather permitting.
    It is an ideal jazz machine -- toneful, easy grab, loud enough to gig and low visual volume for those situations where someone wants you to turn down before you plug it into the wall. GLWS
    Thx, Sam - a couple of builders here had mentioned that it is a Hoffman PR board as well.
    I really like the portablity/power combination.
    But my Ampegs are annoyed and have told me to sell it, ha!

  8. #7

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    did you ever look into converting to a long-tail PI? Seems like you could get even more volume out of it.

  9. #8

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    My tech rearranged the order of something in there to increase the headroom. I just play through the damned things. I used it on a big band gig for some veterans on November 11, and it was great. Four to the bar, straight through, with this guitar, heh. Not my usual bag, but great fun.
    Last edited by Hammertone; 01-31-2020 at 01:40 AM.

  10. #9

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    Quote Originally Posted by Hammertone
    My tech rearranged the order of something in there to increase the headroom. I used it on a big band gig for some veterans on November 11, and it was great. With this guitar, heh.
    New board and I also see a second multicap can, so the B+ supply has undergone some changes as well. That’s a little more than “rearranged something”...... :-)

    No schematic on hand?

  11. #10

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    Looking at the pix, I think that's the only multicap can, next to the mains tranny. The hole for the usual cap can is covered by a transformer or choke now.

  12. #11

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    Quote Originally Posted by Little Jay
    New board and I also see a second multicap can, so the B+ supply has undergone some changes as well. That’s a little more than “rearranged something”...... :-) No schematic on hand?
    Using honkin' big Orange Drops instead of, say, Mallorys, makes it a bit hard to see what's under them. I'm not a toaster tech (although I do play one on TV). Here's a .pdf with some info from the Hoffman site - he shares this info.
    Attached Images Attached Images
    Last edited by Hammertone; 11-13-2019 at 08:44 PM.

  13. #12

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    Having seen recent ads for similar booteek amps from Milkman and Achillies, I just want to point out how much more money they charge for the same thing. Lots of other choices - Alessandro, Allen, Andrews, Bruce Bennett, Carr Sportsman, Clark, Fat Jimmy, Gries, Headstrong, Keedy, Lil' Dawg, Louis Electric, Magic Amps, Morgan, SDG Vintage, Tube Tone, Tyler Amp Works, Vintage Sound, Wooly Coats, YES...
    ...but this one is for sale for $1,200 and is quite gorgeous. Come on down!

    A little bump. Now that ^&%##^* thread about trem on Fenders has me playing House of the Rising Sun all trem-like, sheesh....
    Last edited by Hammertone; 07-09-2020 at 05:28 PM.

  14. #13

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    Here at the House of the Many Amps, this little amp continues to amuse me greatly, but, being the generous and sharing individual I am, I want it to amuse one of YOU greatly, which I amuse myself with the money you send me. Think of the many hours of joy it will help you to achieve while you're all self-isolating. Included with every purchase is sheet music for my latest ditty, "Waitin' out the Wuhan" (think "Stompin' at the Savoy" or "Jumpin' at the Woodside" with a touch of "Inca Roads" thrown in for good measure) Come on down!

  15. #14

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    Quote Originally Posted by Hammertone
    My tech rearranged the order of something in there to increase the headroom. I just play through the damned things. I used it on a big band gig for some veterans on November 11, and it was great. Four to the bar, straight through, with this guitar, heh. Not my usual bag, but great fun.

    OK, thread hijack...................What a gorgeous instrument!

  16. #15

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    Quote Originally Posted by Gitfiddler
    OK, thread hijack...................What a gorgeous instrument!
    It's a '30s John Abbott Sr., dressed up @1980 to resemble a Gibson.
    18 1/2" wide, 3" deep and sounds pretty damned fine.
    For a little extra $$$, I'll throw it in with the amp.
    Last edited by Hammertone; 03-28-2020 at 03:45 PM.

  17. #16

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    Quote Originally Posted by SkipBurz
    Nice, clean craftsmanship....Good job! I'll take those transformers and tubes, for sure!
    Yours for $1,200! I'll throw in the rest of the amp for free!
    ------
    This little amp is still fabulous, and I'm certainly happy having it around, but my pile of amps is still, uh, pile-like. Surely one of you upstanding jazz dooders should grab it and give it the playing time it deserves.

    What's that? You have an extra speaker that you prefer? Sure. Happy to sell it without the speaker. 10.4 pounds lighter that way. $100 less that way. Come on down!