On 27/04/2016 11:06 PM, Dave Plowman (News) wrote:
Pretty basic MOSFET power amp.

I'm used to it thumping at switch on. No speaker relay in this basic
design.

But one of them as taken to thumping at switch off. Not always, which
makes fault finding more tricky.

Most likely cause?


**Cosmic rays? Who knows? Without a GREAT DEAL more information, no one
can help you. Brand and model numbers would be helpful at the very
least. A schematic would be better.

Do you REALLY expect useful advice with so little information?

--
Trevor Wilson
www.rageaudio.com.au

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