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Thread: Princeton Reverb Reproduction

  1. #1
    Forum Member NTBluesGuitar's Avatar
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    Princeton Reverb Reproduction

    ...and the new project begins. The first batch of parts arrived today:

    "...pray do not imagine that those who make the noise are the only inhabitants of the field;
    that, of course, they are many in number; or that, after all, they are other than the little,
    shriveled, meagre, hopping, though loud and troublesome, insects of the hour."

    -Edmund Burke

  2. #2
    Forum Member Don's Avatar
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    Re: Princeton Reverb Reproduction

    I'm looking forward to this.

  3. #3
    Forum Member FrankJohnson's Avatar
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    Re: Princeton Reverb Reproduction

    Quote Originally Posted by Don View Post
    I'm looking forward to this.
    Chess - Me too!
    Kenny Belmont
    >:^{I)>

  4. #4
    Forum Member Gravity Jim's Avatar
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    Re: Princeton Reverb Reproduction

    And how much will you be pricing this one at?

  5. #5
    Forum Member NTBluesGuitar's Avatar
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    Re: Princeton Reverb Reproduction

    Quote Originally Posted by Gravity Jim View Post
    And how much will you be pricing this one at?
    Not sure...not really building it to sell. I ought to have right around $900 invested into parts unless I go with a nicer speaker later.
    "...pray do not imagine that those who make the noise are the only inhabitants of the field;
    that, of course, they are many in number; or that, after all, they are other than the little,
    shriveled, meagre, hopping, though loud and troublesome, insects of the hour."

    -Edmund Burke

  6. #6
    Forum Member NTBluesGuitar's Avatar
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    Re: Princeton Reverb Reproduction

    ...by the way, package #2 has arrived:





    "...pray do not imagine that those who make the noise are the only inhabitants of the field;
    that, of course, they are many in number; or that, after all, they are other than the little,
    shriveled, meagre, hopping, though loud and troublesome, insects of the hour."

    -Edmund Burke

  7. #7
    Forum Member ch willie's Avatar
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    Re: Princeton Reverb Reproduction

    Envy you guys with hands steady enough and eyes strong enough to do this kind of work. But I'm really interested in seeing projects like this. Looking forward to watching it come together.
    If we'd known we were going to be the Beatles, we'd have tried harder.--George Harrison

  8. #8
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    Re: Princeton Reverb Reproduction

    .

  9. #9
    Forum Member NTBluesGuitar's Avatar
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    Re: Princeton Reverb Reproduction

    Quote Originally Posted by Cogs View Post
    .
    I feel ya
    "...pray do not imagine that those who make the noise are the only inhabitants of the field;
    that, of course, they are many in number; or that, after all, they are other than the little,
    shriveled, meagre, hopping, though loud and troublesome, insects of the hour."

    -Edmund Burke

  10. #10
    Forum Member NTBluesGuitar's Avatar
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    Re: Princeton Reverb Reproduction

    I've about got all the parts in hand. Got the Allen/Heyboer OT and Reverb iron:



    I even found a surplus Amphenol AC receptacle:



    Big brother awaits the assembly of little brother:



    Just some minor chassis mods to make (need a larger hole for the AC cord and strain relief and a hole for the bias pot) and it's off to the races!
    "...pray do not imagine that those who make the noise are the only inhabitants of the field;
    that, of course, they are many in number; or that, after all, they are other than the little,
    shriveled, meagre, hopping, though loud and troublesome, insects of the hour."

    -Edmund Burke

  11. #11
    Forum Member chuckocaster's Avatar
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    Re: Princeton Reverb Reproduction

    We're all rooting for ya!! LOVE your work, the attention to detail and flowing cleanliness are second to none.
    "don't worry, i'm a professional!"

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    Re: Princeton Reverb Reproduction

    Why use a two-pronger on there?

  13. #13
    Forum Member NTBluesGuitar's Avatar
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    Re: Princeton Reverb Reproduction

    I wire it up as a bias test point. No need to pull the chassis to check bias voltage, and it maintains that original look.
    "...pray do not imagine that those who make the noise are the only inhabitants of the field;
    that, of course, they are many in number; or that, after all, they are other than the little,
    shriveled, meagre, hopping, though loud and troublesome, insects of the hour."

    -Edmund Burke

  14. #14
    Forum Member Don's Avatar
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    Re: Princeton Reverb Reproduction

    Quote Originally Posted by NTBluesGuitar View Post
    I wire it up as a bias test point. No need to pull the chassis to check bias voltage, and it maintains that original look.
    What a cool idea!

  15. #15
    Forum Member NTBluesGuitar's Avatar
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    Re: Princeton Reverb Reproduction

    Yeah! I did it with my Deluxe Reverb Repro, too.
    "...pray do not imagine that those who make the noise are the only inhabitants of the field;
    that, of course, they are many in number; or that, after all, they are other than the little,
    shriveled, meagre, hopping, though loud and troublesome, insects of the hour."

    -Edmund Burke

  16. #16
    Forum Member CoyotesGator's Avatar
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    Re: Princeton Reverb Reproduction

    What speaker will it have?

    What happend?
    Who let the magic smoke out?

  17. #17
    Forum Member NTBluesGuitar's Avatar
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    Re: Princeton Reverb Reproduction

    Toying with the idea of a Celestion Ten 30, but may go with a Weber 10F150T. Not decided at the moment!
    "...pray do not imagine that those who make the noise are the only inhabitants of the field;
    that, of course, they are many in number; or that, after all, they are other than the little,
    shriveled, meagre, hopping, though loud and troublesome, insects of the hour."

    -Edmund Burke

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    Re: Princeton Reverb Reproduction

    that is a great idea

  19. #19
    Forum Member Don's Avatar
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    Re: Princeton Reverb Reproduction

    Mine is a Mojotone kit and came with a new Jensen C10Q. I tried a factory broken in Weber 10F150 (not "T") in it and didn't like it. It had an upper mid "honk" that wasn't my style. I'm interested in how the T sounds.

    I ended up installing a well broken in Jensen C10Q reissue that I had used in my '68 PR years ago. I really like this speaker. There are so many others that I'd like to try!

  20. #20
    Forum Member NTBluesGuitar's Avatar
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    Re: Princeton Reverb Reproduction

    Did the chassis metalwork adjustments and started fitting things together:





    I'm going to have to get a different fuse holder...it's really tight in there next to the power tube socket:



    The bias pot fits in there nicely, but I'm one switch short - I ordered a more modern one and it won't fit in there. Other than some of the rear faceplate holes not lining up right (nothing a little Dremel won't fix), everything fits pretty well.



    Got everything set and mounted:




    Whew...now on to some wiring.
    Last edited by NTBluesGuitar; 11-13-2016 at 04:18 PM.
    "...pray do not imagine that those who make the noise are the only inhabitants of the field;
    that, of course, they are many in number; or that, after all, they are other than the little,
    shriveled, meagre, hopping, though loud and troublesome, insects of the hour."

    -Edmund Burke

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    Re: Princeton Reverb Reproduction

    (y)

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    Re: Princeton Reverb Reproduction

    Thanks for sharing, TJ, I love to see your beautiful builds!

  23. #23
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    Re: Princeton Reverb Reproduction

    Double post!

  24. #24
    Forum Member NTBluesGuitar's Avatar
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    Re: Princeton Reverb Reproduction

    I've got the circuit board populated now.







    Moving on to wiring soon!
    "...pray do not imagine that those who make the noise are the only inhabitants of the field;
    that, of course, they are many in number; or that, after all, they are other than the little,
    shriveled, meagre, hopping, though loud and troublesome, insects of the hour."

    -Edmund Burke

  25. #25
    Forum Member Don's Avatar
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    Re: Princeton Reverb Reproduction

    That looks great! I like the blue Sozo caps. I put CDE WMFs in those positions in mine.

  26. #26
    Forum Member CoyotesGator's Avatar
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    Re: Princeton Reverb Reproduction

    Looking good!
    What happend?
    Who let the magic smoke out?

  27. #27
    Forum Member NTBluesGuitar's Avatar
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    Re: Princeton Reverb Reproduction

    Looks like a mess...for now:





    Flying leads everywhere!
    "...pray do not imagine that those who make the noise are the only inhabitants of the field;
    that, of course, they are many in number; or that, after all, they are other than the little,
    shriveled, meagre, hopping, though loud and troublesome, insects of the hour."

    -Edmund Burke

  28. #28
    Forum Member Don's Avatar
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    Re: Princeton Reverb Reproduction

    Looking good!

  29. #29
    Forum Member NTBluesGuitar's Avatar
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    Re: Princeton Reverb Reproduction

    Just got the cabinet situation squared away...scored a Mojotone surplus cabinet that was configured for a 12" Speaker. I wasn't planning on a 12" to start with, but this was such a good deal and I didn't have to wait on them to manufacture one. Plus, I can easily make a 10" baffle myself and BAM, I have the best of both worlds.

    Great quality cabinet, by the way:



    1/4" box joints, just like Leo made them:



    I'm going to lightly stain the interior as well, I think.
    "...pray do not imagine that those who make the noise are the only inhabitants of the field;
    that, of course, they are many in number; or that, after all, they are other than the little,
    shriveled, meagre, hopping, though loud and troublesome, insects of the hour."

    -Edmund Burke

  30. #30
    Forum Member Gravity Jim's Avatar
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    Re: Princeton Reverb Reproduction

    NT, I'm curious as to why Mojo would cut that baffle so that the 12" speaker was partially obscured... wouldn't it be better to have cheated the speaker hole to the other side of the baffle?

  31. #31
    Forum Member NTBluesGuitar's Avatar
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    Re: Princeton Reverb Reproduction

    It's supposedly to insure clearance from the speaker basket from the chassis and also balances out the amp since the amp's transformers are on the other side of the cabinet.

    Not sure how it would affect the sound, if at all.
    "...pray do not imagine that those who make the noise are the only inhabitants of the field;
    that, of course, they are many in number; or that, after all, they are other than the little,
    shriveled, meagre, hopping, though loud and troublesome, insects of the hour."

    -Edmund Burke

  32. #32
    Forum Member NTBluesGuitar's Avatar
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    Re: Princeton Reverb Reproduction

    Getting ready to wire in the circuit board...here she is in all her glory:



    ...and the backside (which we shall never see again):

    "...pray do not imagine that those who make the noise are the only inhabitants of the field;
    that, of course, they are many in number; or that, after all, they are other than the little,
    shriveled, meagre, hopping, though loud and troublesome, insects of the hour."

    -Edmund Burke

  33. #33
    Forum Member ch willie's Avatar
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    Re: Princeton Reverb Reproduction

    So great to see this coming together. Very attractive project.

    Your work looks carefully done and. Nice results.
    If we'd known we were going to be the Beatles, we'd have tried harder.--George Harrison

  34. #34
    Forum Member OldStrummer's Avatar
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    Re: Princeton Reverb Reproduction

    Quote Originally Posted by ch willie View Post
    So great to see this coming together. Very attractive project.

    Your work looks carefully done and. Nice results.
    Might I add the word, "lovingly?" I'm not a builder/tinkerer, but this work looks awesome! What do you plan on doing with the finished product?

  35. #35
    Forum Member NTBluesGuitar's Avatar
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    Re: Princeton Reverb Reproduction

    Quote Originally Posted by OldStrummer View Post
    Might I add the word, "lovingly?" I'm not a builder/tinkerer, but this work looks awesome! What do you plan on doing with the finished product?
    Playing it!!!!!
    "...pray do not imagine that those who make the noise are the only inhabitants of the field;
    that, of course, they are many in number; or that, after all, they are other than the little,
    shriveled, meagre, hopping, though loud and troublesome, insects of the hour."

    -Edmund Burke

  36. #36
    Forum Member OldStrummer's Avatar
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    Re: Princeton Reverb Reproduction

    Quote Originally Posted by NTBluesGuitar View Post
    Playing it!!!!!

  37. #37
    Forum Member NTBluesGuitar's Avatar
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    Re: Princeton Reverb Reproduction

    Made some solid progress this weekend. Looks like I just need to get the heater wiring and AC cord in there and it's pretty much finished!

    Preamp side:




    Here's the adjustable fixed-bias addition to stock:


    Lower left you can see the AC receptacle wired up as a bias test point:


    Getting close! The ground switch is wired up with a standby switch:
    "...pray do not imagine that those who make the noise are the only inhabitants of the field;
    that, of course, they are many in number; or that, after all, they are other than the little,
    shriveled, meagre, hopping, though loud and troublesome, insects of the hour."

    -Edmund Burke

  38. #38
    Forum Member CoyotesGator's Avatar
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    Re: Princeton Reverb Reproduction

    Beautiful work NT!
    What happend?
    Who let the magic smoke out?

  39. #39
    Forum Member Don's Avatar
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    Re: Princeton Reverb Reproduction

    That's pretty!

  40. #40
    Forum Member NTBluesGuitar's Avatar
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    Re: Princeton Reverb Reproduction

    Quote Originally Posted by CoyotesGator View Post
    Beautiful work NT!
    Thank you!!! Getting really close now.
    "...pray do not imagine that those who make the noise are the only inhabitants of the field;
    that, of course, they are many in number; or that, after all, they are other than the little,
    shriveled, meagre, hopping, though loud and troublesome, insects of the hour."

    -Edmund Burke

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