I've never encountered the dreaded squeal but it could be due to the close proximity of the wires in the cable entry. You can try adding some heatshrink to them to see if it makes any difference.
Good move as I really don't have fond memories of my old BH arriving with the BG's pushed into the chassis... \
What color did you choose my crazy elephant friend?
If both amps use the same rail voltages and the PSU can cope with the load I see no reason why you can't use a single PSU to power both amp sections, one at a time. The loop out is just another set of sockets wired in parallel.
It's not that bad really, a little charring on the finger and I'm still a bit numb but that's about it. What I'm angry about is not realizing that the B+ would also be on the delay relay terminals...
Woke up, went to work, got home early to work on some of my amps. While setting up a PSU I accidentally zapped my thumb with 350+v. There is a burn mark and everything and I still haven't tested the PSU. Here's hoping I won't be zapped again...
It looks like they are going by the same model that is applied here and it will not make a dent in the consumption, no matter how you tax the stuff. We just celebrated the 20th anniversary of beer drinking (it had been banned since the 1920's and allowed again on March 1 1989) and the annual consumption has more then doubled in those 20 years even with a single beer from a store costing some 2$ when the ISK is weak and much more when it isn't.
That's really not as easy as it sounds since the transformers can give you a lot of cheap voltage swing at a low cost. We are still debating the PSU voltage so how much power the amp will have is up in the air.
That said there are other cheap amp options and if the end result of my Egmont sounds ok then I'll post an updated schematic and BOM.