Noise coming from subwoofer - Page 2 - Home Theater Forum and Systems - HomeTheaterShack.com

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post #11 of 20 Old 06-08-16, 12:47 PM
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Re: Noise coming from subwoofer

The first thing I would do is make sure all the screws are tight. Where the amp is attached as well as the woofer itself. If all that is ok, and you think it is cabinet resonance, place your hand on the box while it is happening & try to tell where it is the strongest. Pull the woofer & put a dowel across there to beef it up. Dowels are easy to place. If you have good wood working skills, you can get more creative. Let us know if that works.
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post #12 of 20 Old 06-08-16, 05:49 PM
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Re: Noise coming from subwoofer

Do you own the movie Pulse,plat the famous 10-20 hz piece and you will hear better where the sound come,s from.
I have a old trance cd i used in the car,there is no bass only infrasound.
That would be a good song.

This is not the first E112 whit this problem i read off.

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post #13 of 20 Old 06-08-16, 09:06 PM
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Re: Noise coming from subwoofer

This is a sealed model, correct? So it's not chuffing from a port.

Run with Tonto's advice...check all screws.. I'd also inspect the rubber surround on the woofer.
Morca has a good suggestion, too... try playing strictly low bass (maybe use REW to play a 40Hz tone). See if that helps you to better identify where it's coming from.

Have you tried unscrewing the woofer and carefully removing it to see if anything has become dislodged inside of the cabinet?
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post #14 of 20 Old 06-11-16, 01:18 PM Thread Starter
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Re: Noise coming from subwoofer

Thanks for your answers.

I was listening to music while paying attention to that noise, in the last days.I have the impression that noise limited to a few songs.I think maybe setting gain control from the subwoofer instead of increasing the channel level from receiver (like you recommended) helped as well.

I will continue testing and if I have that noise problem more, I will try some of your suggestions(but for example, I can't unscrew the woofer and pull it, I think it's risky to do it for a non-technical person like me ).
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post #15 of 20 Old 06-12-16, 01:46 PM
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Re: Noise coming from subwoofer

Quote:
MichaelKnight wrote: View Post
I was listening to music while paying attention to that noise, in the last days.I have the impression that noise limited to a few songs.I think maybe setting gain control from the subwoofer instead of increasing the channel level from receiver (like you recommended) helped as well.
That wouldn't have helped if there truly is something loose. By turning the trim down 2dB and the gain up 2dB that's basically a net zero outcome, so you're essentially back to where you started with regards to overall output. Unless it was a placebo affect, the noise may not be associated to anything loose if that made a discernible impact.


Quote:
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I will continue testing and if I have that noise problem more, I will try some of your suggestions(but for example, I can't unscrew the woofer and pull it, I think it's risky to do it for a non-technical person like me.
I reviewed the E112 and removed the driver to take some pictures, so I know what's involved. With that in mind... if you're the least bit uncomfortable it's probably a good idea for you not to do that. The JL Audio driver is quite heavy for it's size, and the amount of room you have to work with is pretty minimal. That makes it a bit of a challenge.

If you haven't already tightened down the driver and amplifier screws I suggest you go that route first. Don't torque them down, just nice and snug is all. In order to function correctly the E112 needs to remain hermetically sealed. Even a slight air leak can cause a noise, one which would be far more pronounced during times of heavy usage.
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post #16 of 20 Old 06-12-16, 04:37 PM
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Re: Noise coming from subwoofer

Are you sure that this noise isn't coming from something else in your room? A floor board, wall...some other object?
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post #17 of 20 Old 06-24-16, 10:56 AM Thread Starter
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Re: Noise coming from subwoofer

Thanks for your answers.I haven't had time to test the subwoofer for a while so this is a bit late post...

Quote:
Todd Anderson:

Are you sure that this noise isn't coming from something else in your room? A floor board, wall...some other object?
Noise comes from other objects like windows, but I am sure with some songs it also comes from subwoofer's back.

Should I turn the screws toward left or right to make them thight?

Last edited by MichaelKnight; 06-24-16 at 11:11 AM.
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post #18 of 20 Old 06-24-16, 04:52 PM
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Re: Noise coming from subwoofer

To the right.
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post #19 of 20 Old 06-27-16, 04:52 PM Thread Starter
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Re: Noise coming from subwoofer

Thank you Tonto.
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post #20 of 20 Old 02-06-18, 08:18 PM
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Re: Noise coming from subwoofer

My guess>> Sounds like one of the components came loose from the plate amp.

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