Looking for some suggestions on how to stop some room rattling from my subs... - AVS Forum
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post #1 of 12 Old 04-21-2013, 05:58 PM - Thread Starter
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Anyone have any suggestions on how to stop light fixtures from rattling? I've noticed recently that my light fixtures seem to be rattling with a lot of bass. They are tight in their slot, so it isn't the fixture really rattling against the drywall ceiling. It is more of the actual thing that the light twists into. The lights are in their tight too, I made sure they weren't rattling loose. But like if I kind of "fling" the light and let it go, it kind of springs back/forth real quick and makes the rattling noise, if that makes any sense. I can take a video if it doesn't make sense what is going on here.

But I'm pretty sure that is what is making the rattling noise that I have started to hear sometimes. It's really only during certain ranges of bass that hits really hard.

Yesterday I fixed some rattling that I narrowed down to my speakers vibrating on my stands, and put some rubber foam between them and now those are fine. I'm just not sure how to fix this new area that I've pinpointed to cause some rattling.

Any suggestions on how to fix it?
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post #2 of 12 Old 04-21-2013, 06:06 PM
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this happens to me all the time. i really cant stand it. ive tried to make sure everything is spaced apart, away from wall just enough, and stuff like that. it worked a bit.

my suggestion would be to have a plain room just for listening if you can, and also try to have some studio foam so bass is absorbed not bouncing all around.

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post #3 of 12 Old 04-21-2013, 06:38 PM
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Quote:
Originally Posted by purbeast View Post

Anyone have any suggestions on how to stop light fixtures from rattling? I've noticed recently that my light fixtures seem to be rattling with a lot of bass. They are tight in their slot, so it isn't the fixture really rattling against the drywall ceiling. It is more of the actual thing that the light twists into.
The low frequency output of the subs is causing the ceiling to vibrate. Those vibrations are causing the fixtures to vibrate.
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Any suggestions on how to fix it?
Add another layer of sheet rock to the ceiling, screwed to the joists every eight inches, with a layer of floor tile adhesive spread with a 1/4" V notch trowel over the existing ceiling, gluing the two layers together.
Or turn the subs down. wink.gif

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post #4 of 12 Old 04-22-2013, 03:35 PM
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I have 5 recessed lighting fixtures and i have never had that problem. If you want to buy better ones just make sure they do not rattle when you shake the housing at the store. Mine come with clip rings to lock them in with rubber bushings to counter the vibrations.

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post #5 of 12 Old 04-22-2013, 08:06 PM
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Quote:
Originally Posted by Bill Fitzmaurice View Post


Or turn the subs down. wink.gif

Whaaa? I can't believe you said that! eek.gif

Sacrilege!

Symmetry pleases the eye, but it usually offends the ears where low frequencies are concerned. -Yoda Fitzmaurice
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post #6 of 12 Old 04-22-2013, 09:52 PM
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If it can't be fixed in hardware, you could run a sine sweep to pinpoint the frequencies causing the vibrations and surgically EQ down those frequencies...?
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post #7 of 12 Old 04-23-2013, 01:55 PM
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Quote:
Originally Posted by Bill Fitzmaurice View Post

Or turn the subs down. wink.gif

I say do the opposite until you can't hear the rattling over the subs. biggrin.gif
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post #8 of 12 Old 04-23-2013, 02:00 PM
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Can you provide a good clear picture of where the light socket meets the fixture? In some fixtures the light socket is held in place with a nut. If this is the case, you just need to tighten the nut. This may require pulling the fixture off the ceiling to gain access to the rear of it. If not, perhaps some type of high heat resistant, non-flammable adhesive/material to secure the socket in place.
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post #9 of 12 Old 04-23-2013, 03:19 PM
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Quote:
Originally Posted by Joe0Bloggs View Post

If it can't be fixed in hardware, you could run a sine sweep to pinpoint the frequencies causing the vibrations and surgically EQ down those frequencies...?

We're not ringing out a PA here!

J/K wink.gif I've never heard of notch filtering home audio for resonant problems. Given the right EQ tool, yeah, this would be effective ... wrecking the FR in the process.

Any system with serious capability can easily possess the ability to excite many room elements. You've just got to go through and find each offender, and using sticky back felt dots, etc, dampen each spot.

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post #10 of 12 Old 04-23-2013, 09:38 PM
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I gave up sub-18hz years ago for this very reason. Chased and fixed almost all the squeaks and rattles until they were coming from the structure of the house
and inside the fireplace. Didn't matter how loud the volume was, I could still hear the squeaking and it drove me nuts.

For your fixtures, you can try some earthquake putty between the fixture and its home.

Are they recessed lighting? Are you using pig-tail bulbs? Pig-tail bulbs are longer and have more leverage on the socket.

Pull a fixture and manipulate it by hand to see where the vibration is coming from. Then give the offending part some more clearance, a tighter spring, or pack it with clay, or lubricate it with non-flammable lubricant. Maybe disc brake caliper lube.

A couple of sixteenths here and there with a file can do wonders.
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post #11 of 12 Old 04-25-2013, 12:50 PM - Thread Starter
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Quote:
Originally Posted by duc135 View Post

Can you provide a good clear picture of where the light socket meets the fixture? In some fixtures the light socket is held in place with a nut. If this is the case, you just need to tighten the nut. This may require pulling the fixture off the ceiling to gain access to the rear of it. If not, perhaps some type of high heat resistant, non-flammable adhesive/material to secure the socket in place.

The thing that the actual light plugs into clamps into the recessed lighting holder with these 2 metal clamps. There are 4 slots for these to slip into, 2 at different heights, 1 on each side of the holder. The light fixture is not directly twisted or screwed into the plastic light housing. I can get a picture tonight of it, both with and without the light in it.
Quote:
Originally Posted by Tack View Post

I gave up sub-18hz years ago for this very reason. Chased and fixed almost all the squeaks and rattles until they were coming from the structure of the house
and inside the fireplace. Didn't matter how loud the volume was, I could still hear the squeaking and it drove me nuts.

For your fixtures, you can try some earthquake putty between the fixture and its home.

Are they recessed lighting? Are you using pig-tail bulbs? Pig-tail bulbs are longer and have more leverage on the socket.

Pull a fixture and manipulate it by hand to see where the vibration is coming from. Then give the offending part some more clearance, a tighter spring, or pack it with clay, or lubricate it with non-flammable lubricant. Maybe disc brake caliper lube.

A couple of sixteenths here and there with a file can do wonders.

It is recessed lighting. Not sure what you mean about pig-tail bulbs but I will snap some pictures tonight and post them.

Is that putty stuff flammable? That is the thing I'm mots concerned about, if I put stuff up in the light housing, is that I don't want it to get too hot and cause any kind of possible problem.
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post #12 of 12 Old 10-17-2013, 08:22 AM
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Adhesive tungsten weights that you put on golf clubs can help with some types of lighting. It worked for my sconces.

Matt
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