DIY Valve Guitar Amp Head

[DrNomis_44]

I’d guess that the dual cap cans are pretty much a standard size. You can always fit smaller caps in a bigger enclosure, but not the reverse, so it pays the manufacturer to standardise on one or two enclosure sizes for this type of multiple cap.

My thoughts exactly, but it's a real bonus that I don't have to order a couple of new chassis mounting brackets, I can re-use the existing ones which are still perfectly good.


My understanding is that the can itself is tied/connected to the - terminal of each of the capacitors in the can, since the two can caps will be wired in series, that means one of them will have it's - terminal floating/sitting at half the total + HT voltage, I'm not sure what the voltage-rating of the plastic shrink-film covering each of the can caps is, so I'm going to use some heatshrink tubing to ensure that each can cap is fully insulated from the chassis.

Last thing I want is for the chassis to be sitting at something like 200 or 300V DC, when it is supposed to be at ground potential.

The worst electric shock I've ever experienced in my life was from a Wimshurst machine that was being demonstrated in science class when I was in high school, must have been something like 10,000 volts but didn't it ever make me jump, so glad I lived to tell the tale.