6G2 Princeton build

Discussion in 'Shock Brother's DIY Amps' started by Uncle Daddy, Aug 5, 2021.

  1. Uncle Daddy

    Uncle Daddy Tele-Afflicted

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    So far so good.

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  2. 2L man

    2L man Tele-Holic

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    Looks good but board lacks one inch of wire and obviously because of that there is going to flow current in chassis?
     
  3. Uncle Daddy

    Uncle Daddy Tele-Afflicted

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    It separates the filter grounds for the pre-amp and the power section, supposedly to reduce filter hum. The ground bar connects to the chassis via the input sockets, while the first two filter caps are grounded close to the transformer. Normally the 6G2 uses a can capacitor with a common ground for all 3 of the filter caps, and these are hard to source in the EU, so I built the board with a layout more like a 5e3.

    I've built a few amps this way, and they are always very quiet.
     
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  4. Uncle Daddy

    Uncle Daddy Tele-Afflicted

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    Bias board done, bias pot in, PT wired up, rectifier diodes in, OT connected.

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    Attached Files:

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  5. Drew617

    Drew617 Tele-Holic Silver Supporter

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    Looks great!
     
  6. AAA71

    AAA71 Tele-Meister

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    looks great - what buss wire do you use for ground? Havent seen it twisted before.
     
  7. Lowerleftcoast

    Lowerleftcoast Friend of Leo's

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    Have you test fit the filter caps to make sure there is room between the board and the cabinet top? Those chubby ones don't fit well in this style chassis.;)
     
  8. Uncle Daddy

    Uncle Daddy Tele-Afflicted

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    I just checked, there's around 10mm of clearance. Good tip though.
     
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  9. Uncle Daddy

    Uncle Daddy Tele-Afflicted

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    Just regular push back solid core, stripped and doubled over and twisted slowly with a drill.
     
  10. RatBug

    RatBug Tele-Meister

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    Watching this hoping it will get me excited to finally finish mine.
     
  11. RatBug

    RatBug Tele-Meister

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    I did a whole twisted ground buss on my eyelet board build.

    [​IMG]
     
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  12. Drew617

    Drew617 Tele-Holic Silver Supporter

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    Yep, have done all of mine that way, if I've used a bus at all. Twisting in a drill straightens it out automatically and keeps me from having to stock multiple gauges of buss wire. :)

    [​IMG]
     
  13. NTC

    NTC Tele-Holic

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    Is this the only reason to twist the ground? There isn't an electrical reason to do this. It isn't like the heater wires where twisting helps to cancel the 60 Hz fields.
     
  14. Drew617

    Drew617 Tele-Holic Silver Supporter

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    No, but take care not to twist it backwards or else the Thetans trapped inside will escape.

    Manageability, that’s all. Comes out perfectly straight, more gauge from less gauge, quite easy to solder to.
     
  15. Uncle Daddy

    Uncle Daddy Tele-Afflicted

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    A bit more progress.

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  16. Uncle Daddy

    Uncle Daddy Tele-Afflicted

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    Coming on a bit-

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  17. Uncle Daddy

    Uncle Daddy Tele-Afflicted

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    On the final leg now- PT and heaters hooked up, just the mains lead to do and then the fun begins.

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  18. Linkjr

    Linkjr Tele-Meister

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    Looking good inside and out, where did you get that great looking cab?
     
  19. Uncle Daddy

    Uncle Daddy Tele-Afflicted

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    The cab and chassis are from Mojotone, via an ebay seller that supplied the facep!ate and transformers. TBH, it's been an up hill build but it's coming together at last.
     
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