Speaker hum/crackling? - Blu-ray Forum

Automission · 02-13-2009, 12:03 PM

on all my speakers and on several different audio inputs (DVD, 360, Sky box) I'l notice a very faint humming noise. Sort of crackling. However I only notice this if I set the speakers to 50-60 volume which is basically the maximum volume.
If I leave them set to their average volume of 20-30, I can only hear the sound when I put my ear right up to the speaker. I'd also like to mention this is when no sound is being outputted via the speakers, the DVD player is just switched on, not producing any sound.

Are these signs of blown speakers, as I really don't see how I'd of blown them. Never went above 15 volume during the first hundred hours. I have tweaked the settings so they all output around +5db instead of the -4db or so they were set with. But this is only because when they were set to -5db, I had to crank the volume up to 40, which left little room to go louder.

If anyone wants a full run down of my specs, please say. I'm curently running an Onkyo 606 and the Monitor audio Bronze Package.

VinnAY · 02-13-2009, 12:07 PM

theres sure to be some manner of clipping or distortion a max power, that's not an indication of a problem, even the best amplifiers will have some noise @ max power.
However, you could have a ground loop, a 60hz "hum" through your speakers that is electrically induced. You could google "ground loop" and do some reading.

FreddieFerric · 02-13-2009, 11:32 PM

I suggest that you visit www.psaudio.com. They have a fairly detailed paper that examines the issues of humming, why it is caused, and what you can do about it. I read it a while back and found it to be quite interesting. If I remember it also includes a section about identifying particular types of humming.

(although it's Friday night and I find the double shot of Glen Livet that I'm drinking to be waaayy more interesting right now.

)

02-13-2009, 12:03 PM	#1
Automission Active Member Member since:Jul 2008 Location:England	Speaker hum/crackling? on all my speakers and on several different audio inputs (DVD, 360, Sky box) I'l notice a very faint humming noise. Sort of crackling. However I only notice this if I set the speakers to 50-60 volume which is basically the maximum volume. If I leave them set to their average volume of 20-30, I can only hear the sound when I put my ear right up to the speaker. I'd also like to mention this is when no sound is being outputted via the speakers, the DVD player is just switched on, not producing any sound. Are these signs of blown speakers, as I really don't see how I'd of blown them. Never went above 15 volume during the first hundred hours. I have tweaked the settings so they all output around +5db instead of the -4db or so they were set with. But this is only because when they were set to -5db, I had to crank the volume up to 40, which left little room to go louder. If anyone wants a full run down of my specs, please say. I'm curently running an Onkyo 606 and the Monitor audio Bronze Package.

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02-13-2009, 12:07 PM	#2
VinnAY Banned Member since:Sep 2008 Blu-ray reviews:1	theres sure to be some manner of clipping or distortion a max power, that's not an indication of a problem, even the best amplifiers will have some noise @ max power. However, you could have a ground loop, a 60hz "hum" through your speakers that is electrically induced. You could google "ground loop" and do some reading.

02-13-2009, 11:32 PM	#3
FreddieFerric Blu-ray Knight Top ranked HT gallery Member since:Mar 2008 Location:NOLA Home Theater Gallery:146 4K collection:14 Blu-ray collection:238 Blu-ray reviews:7 Trading Score:1	I suggest that you visit www.psaudio.com. They have a fairly detailed paper that examines the issues of humming, why it is caused, and what you can do about it. I read it a while back and found it to be quite interesting. If I remember it also includes a section about identifying particular types of humming. (although it's Friday night and I find the double shot of Glen Livet that I'm drinking to be waaayy more interesting right now. )

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