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Discussion in 'Shock Brother's DIY Amps' started by Uncle Daddy, Aug 5, 2021.
So far so good.
Looks good but board lacks one inch of wire and obviously because of that there is going to flow current in chassis?
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.
Bias board done, bias pot in, PT wired up, rectifier diodes in, OT connected.
looks great - what buss wire do you use for ground? Havent seen it twisted before.
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.
I just checked, there's around 10mm of clearance. Good tip though.
Just regular push back solid core, stripped and doubled over and twisted slowly with a drill.
Watching this hoping it will get me excited to finally finish mine.
I did a whole twisted ground buss on my eyelet board build.
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.
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.
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.
A bit more progress.
Coming on a bit-
On the final leg now- PT and heaters hooked up, just the mains lead to do and then the fun begins.
Looking good inside and out, where did you get that great looking cab?
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.