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In Reply to: RE: Why do subwoofers thump when turning on power amp? posted by tketcham on April 11, 2017 at 09:17:51
I've read all the replies so far, and nobody has answered your question.
Certainly, I don't know, since I'm not an electronics guy.
I'll talk with a friend tomorrow who is, and hopefully one of us will get back to you with a meaningful answer.
Thanks for pursuing an answer to the question. I've been thinking that there might be something in the power amp circuitry that's sending a small charge (DC current?) back to the preamp. But I'm not an electronics guy either. Obviously. '-)
I talked with my friend, and he explained it to me. 'Course, I got the gist of it, and understood the basics/fundamentals, but he was way over my head in the details.
Someone here did a pretty good job of explaining it. Sorry, at the moment, I can't see/say who it was.
Paging JC: Are you reading this?
> I've read all the replies so far, and nobody has answered your question.
I'm really looking forward to your answer. I wonder if you could also ask your friend why my subwoofers don't make any noise when they come out of standby. I always thought there should be a "thump" or something, but they don't make any sound at all. They seem to work just fine in reproducing the deep bass frequencies in music, but they are completely silent when going into standby and also when coming out of standby.
My subwoofers are dead quiet when going in and out of standby mode, except when using the specific combination of preamp and power amp.
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