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Happy New year all we brought my Brother and his wife to Hawaii This is a new start for us as we did not talk for 15 years Trip is going wonderful so what a start to 2025

Audio Precision ATS-1 is a Best Buy in my book. Everything across my bench starts then ends up on the AP

Gary if the caps are out and the bridge rectifier sees an open and not load then quite possibly the result you have

Yup those resistors do not get hot. in last update to the c-4000 they are eliminated check the regulators are in correctly

Probably not with new chassis as it is taller . Do options are sell me that kit or use original chassis I’ll in for buying it Pm me if interested Thanks

The wood sides and flip up top are rare Nice to have. I have three sets of them and always looking for an other

That transformer end bell is also steel and not cast zinc like later ones In my opinion much better

I’d suggest you upgrade the 2.3k 5 watt resistors to 7.5k 5 watt and change the ic’s to lf351 type here is the PL doc

This is it

That’s it Gary One turn is all we use in the PL but if required the multi turn is more accurate I’d try the single turn first I guess

This is typical wiring for bias Gary

Are you thinking of new transistor? If so 34 mj21196 with original 4 rca410 or better 4 mj21195’s if you have the nerve and are able you could do some serious upgrades to that puppy PM me if interested or search my dual 500 builds in this forum

I like them wild

Just mine

I’m a 70 year old adolescent

Ok I often mention inductance in supply wires and direction of signal wires in your amp. I think this would be a good place to have us contribute to the truth of how elections flows and how it affects surrounding Components and signals. Does shielding work better than proper routing? Do...

Some JB weld is good solution to the transformer cover These heatsinks are made from zinc I believe so not to easy to reshape I did one that I use here at home with good results using the JB weld epoxy