Seems like it is getting feedback. Also there is a hum in the background. Is there anything I can do to fix that?
1677374
If you have long hair or wear glasses, you will hear noise. Make sure your hair isn't in the way and if you wear glasses try changing the frequency or lowering the volume
2224110
Because its broken. It should be nearly silent. Send it in for a replacement.
660749
Yes there is a hum (slight). What I hear is constant; no matter what volume I am set at. I actually had to exchange my first set due to amplifier 'popping'. Again, volume setting did not matter. I have decided not to let this hum problem bother me because it is inaudible when something is playing.
533485
If you use the sleep mode it is a low hum but I usually can't tell it's on. On regular mode just sounds like a fan.
813206
I got some feedback when using the amplifier in a small room and at high volume. Try lower volume or any close wall at front. If feedback is always present, maybe is defective.
1695892
You know I had to go and check! However, I have an 828LM and no hum whatsoever. Have you unplugged (the replugged) the unit and tested it away from other equipment for this humming noise?
410907
I don't use mine anymore due to the feedback created when I connected two microphones to it. I suggest ensuring you can return it if not satisfied.
1003627
Thanks very much to those who offered suggestions. Everything was fine with the wiring. A phone call to a Sony tech resolved the problem, which was found to be my selection of HDMI Passthrough to "ON". As such, the receiver remained partially powered in Standby and resulted in the hum. Re-selecting HDMI Passthrough to "OFF" cured the problem.
268658
Sounds like your mic is too close to the radio speaker. Not sure what else it could be. You're getting feedback for some reason.
148235
At low volumes it is not very noticable... but if you crank it up then turn off the source of the audio (like turning off your tv) leaving the sound bar on...then the hum is bad.
1510638
Hi i own two on them on same ciruit no humming sound while in use. Good luck.
1543742
It is a low pitch hum. Usually mine is on low and I get used to it and don't really notice it. Higher speed is more noticeable, but still more a medium pitch, not high-pitched.
690559
Could be a defective unit. Mine will sometimes make a very slight hum (ear right next to the unit) but even when I'm lying in bed sleeping other than the reassuring click that it turned on, I can't hear the hum. I also am only drawing... ~11A on the heaviest circuit, if you're pulling more than that it could explain a louder noise
2144805
Sounds like it's too much squelch. Turn it up until you have a constant static, then back it off until there's nothing. That's what we did and we don't have that problem.
36311
Thanks Wagner. I will set it that way and see if anything changes over the next day or two and post back here.So much for a day or two, I just tried it and it is very loud now. Mine wasnt refurbished, I bought it new in the package. Werid bug for sure.
1003628
No, It's not normal. It's probably 60 (Hz) hum. Try reversing you AC plug, that should fix the problem 90% of the time. If that doesn't work try grounding the case.
313445
sounds like it has a problem, there should be no noise coming from unit, contact manufacturer or place of purchase.