Vintage Asylum

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

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RE: Troubleshooting suggestions for a subwoofer plate amp?

Posted by fredtr on July 22, 2020 at 11:54:45:
First thing is to see if it is feeding DC to the speaker. If you don't have a voltmeter, just watch the woofer, starting with amp powered off. If when you turn it on, with null input, does the speaker push in or out and stay that way? If it does then you do have DC, which is an output stage problem.