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Classic gear from yesteryear; vintage audio standing the test of time.

RE: 500c buzzing power transformer




Amps that I've worked on with heavy mechanical buzzing or vibration sometimes benefit from re-lacquering the laminations. Some ppl have inserted rubber bushings to isolate the tranny from the chassis, reducing the buzz from resonating into the chassis.

Here's a photo of some such arrangement. Maybe, it'll help.


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