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Buzz's Acro UL-II Monoblock Project

Hey Buzz, is your avatar a picture of the same guy as before but, well, shall we say, "cleaned up"? Are either of them you by any chance?
 
The current pic is of me about a week ago. The other guy . . . Rasputin . . . my alter ego. :-)
 
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Part #'s engraved on the BOTTOM! - no traditional pencil-scribble?

He shoots; he scroes!

Class act! Love the detailing.
 
The bottom doesn't look too pretty as it is getting populated on the top . . .

I've sandwiched rubber washers on the power transformer mounting screws: one underneath the screw head; one between the transformer bell mount and the chassis; and one under the washer on the bottom. I drilled the mounting holes a bit bigger. Hopefully, this will provide some vibration isolation.

I couldn't do the same with the built-in studs on the output transformer - I only used one rubber washer between the tranny and the chassis. The studs were short, considering the 1/8" plate thickness. I anchored them with a special kind of KEPS nut. I hope it will hold.
 

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Looks VERY sharp Jon! -- You will love those KT88 Gold Lion reissues. They are the closest that any Russian made tube comes to mimicking the original product, and they are very close indeed. I've been running a quad for some time now, and remain impressed with them.

Dave
 
BuzzK said:
I've sandwiched rubber washers on the power transformer mounting screws: one underneath the screw head; one between the transformer bell mount and the chassis; and one under the washer on the bottom. I drilled the mounting holes a bit bigger. Hopefully, this will provide some vibration isolation.

I couldn't do the same with the built-in studs on the output transformer - I only used one rubber washer between the tranny and the chassis. The studs were short, considering the 1/8" plate thickness. I anchored them with a special kind of KEPS nut. I hope it will hold.
Click to expand...

If I might suggest, it would probably be a good idea to connect a ground wire to one of the studs on each tranny since you have isolated them from the chassis.

John
 
Thanks, John. The power tranny is a (used) Hammond and I think it has a special grounding wire for this purpose, which is what I generally do.

Dave G: This pic's for you. I'm looking forward to wiring the thing up. :-)
 

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Rustnot: Now there's a pair of sharp eyes for ya!

I had them made. Unfortunately, I don't have extras, or I'd send you a couple.
 
I'll have to read this whole thing through. I have a set of ULII's moldering in the archive. You've made some very useful improvements in the power supply BuzzK.
 
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