Beeping sound from new subwoofer

[Dolby atmaz]

Hi, i just bought new speakers 5.1 and after using it about for 3 weeks it started to make strange beeping sound - subwoofer. I have harman kardon hkts 9/16 and amp is denon avr-d520bt. What is the reason of this sound? Its new, and it never been like this. Thank you

 

[WineOfTheVeins]

What do you mean by a beeping sound? When does it do it? Idling, while watching movies? What kind of hookups are you using?

 

[everettT]

Beeping is typically an indicator, but I havent seen that on a sub, unless its wireless.

 

[Dolby atmaz]

Same sound like in video. when i turn on my speakers and amp it starts sometimes during the movie, but i think its random. i will check what hookups im using. My subwoofer is not wireless.

 

[Drunkpenguin]

Ok, buzzing and beeping are 2 very different things lol. Sounds like a ground loop to me. Better cables can help sometimes. If you unplug the rca cables does the sound go away?

My living room sub suffers from this a little bit. What I did was turn the volume way up on the receiver which allowed me to turn the sub down enough that I could no longer hear it. My living room is not a critical listening space so this was easier than trying to track down the source problem which can be tough with these some times.

 

[Dolby atmaz]

hookups is red yellow white cables which goes to amp, dont know how they are called. I turn off sub then i turn it on and for some time the buzzing sound dissapears

 

[TLS Guy]

hookups is red yellow white cables which goes to amp, dont know how they are called. I turn off sub then i turn it on and for some time the buzzing sound dissapears

OK disconnect the cable from receiver to sub. Does the buzz stop?

Yes, you have a ground loop.
No the sub power supply is shot. Actually that is what it sounds like to me.

Cause: - you bought absolute unabashed junk.