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Old 09-11-2007, 10:05 PM - Thread Starter
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I have a loud thumping, or popping noise, coming from my Denon Subwoofer DSW-76. It seems as though it occurs during predictable times - in other words I can rewind video content and the popping can and will occur over and over again at the same time in respect to the video content.

I have also noticed that the thump (popping noise) occurs when the system is shut down and the subwoofer changes to standby.

a really big HDTV,
a really fast computer with blu-ray burner,
a really nice HD camcorder...
and no software to burn blu-ray
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Old 09-11-2007, 10:13 PM
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It sounds like your amp is having some issues. Does it happen at all volume levels or just when pushed hard?

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Old 09-12-2007, 08:37 AM - Thread Starter
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Quote:
Originally Posted by jpmst3 View Post

It sounds like your amp is having some issues. Does it happen at all volume levels or just when pushed hard?

Actually it occurs when the system is turned off and the subwoofer is in auto standby mode. It also occurs when the theater is up and running with either cable or dvd input.

However, I think I may have narrowed it down to observing it ONLY occuring when the subwoofer goes from on to auto standby. I might try turning it off and on depending on when I use it and see if that will bypass this popping noise.

After doing some research, I found a forum on car stereos where a person was having it happen to a subwoofer in their car when it when on auto standby. The person responding in that particular forum said that it has something to do with a build up of energy or something and that it would not harm the subwoofer.

By the way I never really push my system, it is mostly used for movies and the volume rarely exceeds what it can handle. Every once in a blue moon I will turn the volume way up to piss my wife off for fun, but that is it.

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a really nice HD camcorder...
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Old 09-12-2007, 08:59 AM
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Your solution may eliminate the noises but will not cure what seems to be a problem with the amp shut-down. It should not do it and I cannot say if it is potentially harmful to the woofer or not. The person who said it is due to "a build up of energy" is correct but that does not mean that the energy should not be dissipated quietly. Did it always do this or is is a new observation?

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Old 09-12-2007, 10:11 PM - Thread Starter
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Originally Posted by Kal Rubinson View Post

Your solution may eliminate the noises but will not cure what seems to be a problem with the amp shut-down. It should not do it and I cannot say if it is potentially harmful to the woofer or not. The person who said it is due to "a build up of energy" is correct but that does not mean that the energy should not be dissipated quietly. Did it always do this or is is a new observation?

Brand new observation. Although never heard it once today after turning my woofer on after it had been off for a day or so.

Thank you for your input. Let me know if you think of anything else and I will update tomorrow.

a really big HDTV,
a really fast computer with blu-ray burner,
a really nice HD camcorder...
and no software to burn blu-ray
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