"Official" Audyssey thread (FAQ in post #51779) - Page 2485 - AVS | Home Theater Discussions And Reviews
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post #74521 of 74522 Unread Today, 12:03 PM
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Originally Posted by kbarnes701 View Post
Before getting to Audyssey, if it were me I'd want to know why my sub was humming and to fix it. The sub shouldn't hum so something must be wrong. Is it a loud hum? Is it mains frequency? A ground loop? What?

Second, if you are setting up to use 75dB test tones (the first stage that Audyssey asks for) the sound coming from the sub when Audyssey pings it should be relatively quiet, not cat-terrifying loud. This also suggests a problem somewhere. I assume you did adjust the sub so the reading is ~75dB, as Audyssey requires?

Only when you have fixed any problems with the sub is it worthwhile to figure out the Audyssey calibration IMO.

Thanks for the reply. I don't know know how to quantify how loud the hum is. It's not loud but it's clearly audible I'd say.

I don't know what "mains frequency" is so I couldn't really answer that. Don't know if it's a ground loop either. I agree that I need to fix any problems before calibrating, I just don't know if there are problems or if I just have something set incorrectly. Should my sub amp be set at 180 Hz when running Audyssey? I called Denon and they didn't seem to be able to give me a definitive answer either...
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post #74522 of 74522 Unread Today, 12:05 PM
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I did read the links in your sig. as well as the info in the top of the owners thread for my receiver. There is a lot of info to digest there, I'm not sure I'm comprehending it all properly and I could very well have overlooked something...
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