False ceiling vibrating. Any solution please???

[Naveenbnc]

Hello all,

For quite long, i have a vibrating sound in my room. This is happening even without using a sub. By adding a sub, it is increasing a bit more. I taught some furniture is vibrating.

After observing and checking a lot, finally i found the false ceiling is vibrating. When I hold it up with slight pressure, it is stopping.

Please see the attached image where I highlighted the area. The opening is 6 inch deep x 2.5 inch wide. Can we stop this vibration by filling it up with foam or something??

Or should I change the place of my sub?? (It is placed on the floor at the right side of the laptop table.) I can't change place of my FS any way...

Any suggestions please??? Ofcourse, it is not unbearable, but it's a bit disturbing.

Thanks in advance.
Naveen

Structurally i can't add any reinforcement to add strength. Big exercise, any may not be worth doing.

But if the vibrations are due to "resonance" within the air in that cavity, it should stop by filling foam, or closing the cavity from the front side.

But if it is because of weak build quality, can't do much about it..... Just my taught....

 

[midhun280681]

Try a thick carpet on floor.. It may help to some extent in this case.

 

[tuff]

Boy that's a bizarre problem. I dont have any solution but as you mentioned, stuffing the empty area with foam might work,

 

[Naveenbnc]

thank you tuff & midhun ....

actually vibrations are invisible. But if I touch it, I can feel, and they are stop as long as I hold it.
Coming to build quality, its actually pretty strong.
So Im guessing, the entire room acoustics, put together, is somehow causing some resonance in that area.
I will try your ideas any way ....

 

[ItsMe]

Stuff the void with thick cloth and see whether it will help to reduce the vibration

 

[kane]

hank you tuff & midhun ....

actually vibrations are invisible. But if I touch it, I can feel, and they are stop as long as I hold it.
Coming to build quality, its actually pretty strong.
So Im guessing, the entire room acoustics, put together, is somehow causing some resonance in that area.
I will try your ideas any way ....

Try getting some carpeting into the room as well as try placing the FS a little away from the side wall to see if it makes any difference

As for the cavity is that for Lighting ? just roll up a couple of bedsheets and place them in there in there and see if the vibrations stop

 

[Naveenbnc]

hey guys ....
i was about to start a hunt for a foam !!!
thanks a lot for the idea of a thick cloth or bed sheets. Thats an easy fix....
and il move the FS away from the wall .... lets see....

 

[sud98]

I am not sure if the problem is the POP (I am assuming thats what the false ceiling is made of). Add absorbers/bass traps to the room and try and move the sub around to see if it reduces the vibration. If the POP is vibrating then there may be a defect and it might be a bigger risk than just acoustics. Just check if the vibration sound is happening due to a room mode.

 

[Naveenbnc]

thank you sud98.... I will check that too ... whichever works....

 

[Fiftyfifty]

Hi,
I have a similar problem and many others with false ceilings have it too. I hear the vibration only in one song at the strike of one bass note. Lower bass, higher bass do not cause the vibration. What I hear is actually a buzz. I don't think the problem can be solved by stuffing the opening on the side. It is more likely that the entire false ceiling, which is usually suspended, vibrates at a particular resonant frequency. It would be nice to hear from someone who has had this problem and solved it.
Cheers!

 

[annapl]

im living with this and i got used to it
it vibrates at very low frequencies only (like in horror movie while every thing is silent
and ghost is about appear that low level bass will rattle my false ceiling) NO FIX .
if any one fixed this issue guide us

 

[kane]

Hi,
I have a similar problem and many others with false ceilings have it too. I hear the vibration only in one song at the strike of one bass note. Lower bass, higher bass do not cause the vibration. What I hear is actually a buzz. I don't think the problem can be solved by stuffing the opening on the side. It is more likely that the entire false ceiling, which is usually suspended, vibrates at a particular resonant frequency. It would be nice to hear from someone who has had this problem and solved it.
Cheers!

I had a vibration like that where the lighting fixture ( aluminum Frame) in the false ceiling. It was my subwoofer driving it bonkers and yes at particular frequencies. I read a bit and apparently to get rid of vibrations from the sub most people recommended things like isolation pads and isolation feet. since i did not want to spend so much i took an old yoga mat ( the rubberized type with square baffle type designs on them) cut it to size and used it below the sub, that seemed to take care of the vibrations in the aluminium fitting - no harm trying to see if it fixes your problem,

 

[Naturelover]

Maybe you could PM below FMs if they don't come on board. One is an acoustics & audio consultant and the other is an architect.
Ravindra Desai
amangujral06

 

[sanjivnayak]

Common feature where such tray type ceiling design exists. Relocate the sub will subside.

 

[annapl]

I had a vibration like that where the lighting fixture ( aluminum Frame) in the false ceiling. It was my subwoofer driving it bonkers and yes at particular frequencies. I read a bit and apparently to get rid of vibrations from the sub most people recommended things like isolation pads and isolation feet. since i did not want to spend so much i took an old yoga mat ( the rubberized type with square baffle type designs on them) cut it to size and used it below the sub, that seemed to take care of the vibrations in the aluminium fitting - no harm trying to see if it fixes your problem,

can you post some pics?

 

[kane]

can you post some pics?

 

[annapl]

Thank you will do and update

 

[Fiftyfifty]

There may be many solutions to handle the bass - moving the sub, changing the speaker position, stuffing the bass ports with foam plugs, reduce the volume and so on, but is that what we want?

 

[Naveenbnc]

Thank you very very much people.... Many responses.

Actually the rattling sound is not continueous. It happens for some specific songs, at some specific bass notes. And in movies, it happens for about 10-20% of the entire movie duration.

And the entire false ceiling is not vibrating. Only the open cavity that I highlighted in the picture.

If there is no easy fix we can live with it......
But I'll try all the suggestions this weekend and update the results.....

 

[captrajesh]

False ceiling and wall paneling are fixed onto a framework; of galvanised steel in case of former and wood in case of the latter. Large panels vibrate especially when LF is generated; period. Generalist contractors, workers do not envisage the kind of SPL and frequency range that's generated by high fidelity sound systems and since a close grid framework means more money, make it only to provide optimal structural stability which is just not enough. It may or may not get solved by placement of speakers and Subwoofers. The proper way to solve would be to add reinforcement behind the vibrating panel. Quick fixes would include things like reducing the volume, adding some weight onto the vibrating panel etc.