Noise coming from subwoofer - Home Theater Forum and Systems - HomeTheaterShack.com

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post #1 of 20 Old 06-06-16, 04:01 PM Thread Starter
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Noise coming from subwoofer

I have two floorstanding speakers,a JL Audio E112 subwoofer and a Pioneer VSX-519V_K a/v receiver which is connected to my desktop Pc via optical cable.Subwoofer is connected to receiver via a RCA cable plus Y adapter.

Subwoofer's master volume control is at the middle(0).Subwoofer's channel volume is set to "+4" on the receiver.
Now,when I turn the volume(using receiver's master volume) up to a loud level, I hear a noise/sound coming from subwoofer.When I put my ear on the subwoofer, I hear it's coming from the back of the subwoofer.It's like a cabinet resonance but I am not sure. I think it happens especially if the source material is bassy and the volume is a bit loud. When I turn the volume level down, it goes away.

What may be the cause of the problem?
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post #2 of 20 Old 06-06-16, 04:43 PM
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Re: Noise coming from subwoofer

Hey MK, welcome to the shack. Can you tell us what kind of subwoofer it is?

Try setting the AVR's subwoofer channel back to (0) & increase the volume control on the amp for loudness. It will get louder as you increase the volume on the AVR. Does that make any difference?
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post #3 of 20 Old 06-06-16, 05:07 PM
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I'd have to agree with Tonto. Get the setting on the AVR to zero and then use the gain on the sub to increase or decrease sub impact when the volume is increased.
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post #4 of 20 Old 06-07-16, 04:37 AM Thread Starter
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Re: Noise coming from subwoofer

Thanks for your answers.

I tried setting subwoofer's channel level on receiver to 0 and subwoofer's gain control to 2 o'clock way but I still hear that noise/sound/cabinet resonance(sometimes it's very low,I can hear only if I bend myself towards subwoofer's back).I even tried setting both of them to "0" but still I can hear it.
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post #5 of 20 Old 06-07-16, 04:57 AM Thread Starter
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Re: Noise coming from subwoofer

Quote:
Tonto wrote: View Post
Hey MK, welcome to the shack. Can you tell us what kind of subwoofer it is?
Thanks.It is a Class D amp,1500W RMS(short term) ,12 inches subwoofer.


I think the sound is like caused by a loose screw or something like a (possibly metal) part rattling at the back of the subwoofer or cabinet resonance but I am not sure.

Last edited by MichaelKnight; 06-07-16 at 05:23 AM.
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post #6 of 20 Old 06-07-16, 05:25 AM
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Can you record the sound? Perhaps take a video, post to YouTube, and put link here?
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post #7 of 20 Old 06-07-16, 06:51 PM Thread Starter
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I tried recording the noise using phone but loud bass totally overshadowed the noise, it is not hearable inside the recording.
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post #8 of 20 Old 06-07-16, 07:04 PM
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NP.

What kind of surface is the sub sitting on?
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post #9 of 20 Old 06-08-16, 07:12 AM Thread Starter
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Thanks for your answer.The subwoofer is on hardwood.I also tried running it on carpet, no difference.
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post #10 of 20 Old 06-08-16, 08:19 AM
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Re: Noise coming from subwoofer

Change the sub cable and see. I had a hum that went away when I changed the cable.
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