Latest build.. that was fun!

Discussion in 'Shock Brother's DIY Amps' started by Diverted, Sep 30, 2019.

  1. Diverted

    Diverted Tele-Meister

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    Just thought I would post some photos of the latest build. Had chassis done last week but finished cabinet Saturday.
    This is a Fender Princeton Reverb circuit with some changes. As usual with me, form somewhat dictated function on this one but I'm super happy with it. It's the second of this circuit that I've built in the past few weeks.

    I had a pre-cut Princeton chassis (straight, not angled) but a power transformer with voltages that required a solid state, not tube, rectifier. So with one extra octal socket, I decided to have fun. Decided to put the tremolo/PI tube in the last of the three octals (other two were the 6V6s). Since it's an octal hole, I ended up using a 6SL7.

    With the PI/tremolo on the octal, I now had one extra nine pin hole. What to do with it? Decided to add another channel, and voiced it more like an early Marshall. I only needed one triode, so I enlarged that first nine-pin socket to octal size and put in a 6SF5, which is the octal version of one half of a 12AX7. I ran these two triodes to a switch. One position, stock Princeton. The other, the new channel. Single input jack.

    Other changes: Lar-Mar master volume, bright switch on the treble, mid pot, and various things to slow tremolo and decrease reverb attenuation and noise. Added a parallel D node, on which I put the early gain stage plates.

    The amp sounds fantastic. And the Tolex is great stuff ... very sparkly vinyl that I got for a very reasonable price on fabricempire.com.

    Thanks for looking! I will probably build this one again.
     

    Attached Files:

  2. boredguy6060

    boredguy6060 Friend of Leo's

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    Very impressive
     
    Diverted likes this.
  3. avspecialist

    avspecialist TDPRI Member

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    I really like your using the terminal strips. Beautiful job on all accounts!!!
     
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  4. dan40

    dan40 Tele-Afflicted

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    Sweet!! I have also thought of using the strips like you did but have never tried it. Nice job!
     
  5. Diverted

    Diverted Tele-Meister

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    Thanks! I love terminal strips. Easier to move stuff around if I want than a pre-cut board.
     
  6. Diverted

    Diverted Tele-Meister

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    Thank you!
     
  7. mkdaws32

    mkdaws32 Tele-Meister Ad Free Member

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    Very impressive! I bet that Marshall-esque channel really rocks with that V30!
     
  8. Old Deaf Roadie

    Old Deaf Roadie Tele-Holic

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    I guess I never realized how many folks were building amps, & I have to admit it looks like fun. I have 2 guitars to get done this winter & think I will do an amp after those. It seriously reminds me of fond memories building Heathkit stuff with my dad.
     
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  9. Diverted

    Diverted Tele-Meister

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    It really does. I'll be putting some videos at some point soon. Thanks!
     
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  10. Diverted

    Diverted Tele-Meister

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    It's a blast. I've done a bit of everything in my life and I enjoy doing this as much as anything I've ever tried. Do it!
     
  11. LightningPhil

    LightningPhil TDPRI Member

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    Looks awesome and bet it sounds it too!
     
  12. JohnnyCrash

    JohnnyCrash Doctor of Teleocity

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    What’d you tweak in the reverb circuit?

    I’m dealing with excessive reverb noise in one of my recent builds.
     
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