Vibrating Speaker Cabinet:Pioneer SP-BS22-LR

[rakeshchn]

My audio setup for home theatre consists of a pair of Pioneer SP-BS22-LR speakers and a SP-C22 connected to Yamaha HTR-4064 receiver. Also there is locally made sub woofer, thus completing a 3.1 setup. The speakers are set to large and crossover at 60 Hz (probably crossover doesnt matter as speakers are set to large) in HTR setup. The problem is that when there is very deep bass the Left side speaker cabinet vibrates and creates a rattling sound between itself and the shelf on which it sits. This does not happen in the right side speaker. I have addressed this for the time being by putting 2 water filled bottles on the speaker cabinet in left side to contain the vibration, and all is good. Deep bass is tight and there is not cracking, booming or over vibration of speakers themselves. It is just the cabinet vibrating causing the rattling sound. Is this normal, why does this happen? Please help me guys!

 

[tuff]

It should not happen. If you are using a Subwoofer, try setting speakers to small. Set the crosseover at 90 or so.
But it is weird that only one speaker rattles. Swap the speakers and check. If the same speaker rattles it could be the cabinet is the culprit. If not, then the stuff the speakers are sitting on could be the issue.

 

[rakeshchn]

Will try swapping the speakers and see what happens. Anyway want to clarify couple of points.
-This happens only with very low frequency effects, probably below 50 Hz.
-The whole speaker cabinet vibrates, not any specific panel/side or grill. The rattling sound comes from the contact between base of the cabinet and shelf.

 

[greenhorn]

put it on some cloth/foam etc?

 

[MaSh]

My audio setup for home theatre consists of a pair of Pioneer SP-BS22-LR speakers and a SP-C22 connected to Yamaha HTR-4064 receiver. Also there is locally made sub woofer, thus completing a 3.1 setup. The speakers are set to large and crossover at 60 Hz (probably crossover doesnt matter as speakers are set to large) in HTR setup. The problem is that when there is very deep bass the Left side speaker cabinet vibrates and creates a rattling sound between itself and the shelf on which it sits. This does not happen in the right side speaker. I have addressed this for the time being by putting 2 water filled bottles on the speaker cabinet in left side to contain the vibration, and all is good. Deep bass is tight and there is not cracking, booming or over vibration of speakers themselves. It is just the cabinet vibrating causing the rattling sound. Is this normal, why does this happen? Please help me guys!

Set the speakers to Small when you have the Sub to do the heavy weight, unless the Sub is not capable of doing it all alone. As rightly suggested above, set them Small crossing them at 80-90Hz.

Also, what mode does your Receiver run in? Aren't you missing the rear channel surround signals?

Will try swapping the speakers and see what happens. Anyway want to clarify couple of points.
-This happens only with very low frequency effects, probably below 50 Hz.
-The whole speaker cabinet vibrates, not any specific panel/side or grill. The rattling sound comes from the contact between base of the cabinet and shelf.

Can you confirm whether its the Speaker Cabinet or the shelf it is placed on? Can you try placing the speaker on a leveled floor?

MaSh

 

[rakeshchn]

Receiver is running in 3.1 mode thus downmixing 5.1 tracks. Its okay for time being until I figure out some elegant way to route cables to rear of sofa.

Based on the suggestions I set the speaker to small and adjust crossover to 90 Hz or 120 Hz, this will stop the cabinet vibration. But I feel some of the higher end frequencies of bass are missed, especially in music, even if I set the crossover to 120 Hz (probably limitation of locally made sub-woofer). Anyway what troubles me is why this internationally acclaimed speaker would exhibit cabinet vibration at whatever frequency it may be :annoyed: Like i said before by keeping a water bottle on the top and thus pressing the cabinet firmly on the shelf the rattle is gone.

 

[MaSh]

Receiver is running in 3.1 mode thus downmixing 5.1 tracks. Its okay for time being until I figure out some elegant way to route cables to rear of sofa.

Based on the suggestions I set the speaker to small and adjust crossover to 90 Hz or 120 Hz, this will stop the cabinet vibration. But I feel some of the higher end frequencies of bass are missed, especially in music, even if I set the crossover to 120 Hz (probably limitation of locally made sub-woofer). Anyway what troubles me is why this internationally acclaimed speaker would exhibit cabinet vibration at whatever frequency it may be :annoyed: Like i said before by keeping a water bottle on the top and thus pressing the cabinet firmly on the shelf the rattle is gone.

Yes setting the crossover wil take away the deeper bass from towers and Give it to the Sub. If you feel its missing, then check the sub.

If bottles are reducing the vibration, then the culprit is the shelf,not the speaker cabinet. Could you post a picture of the setup? Did you try with speakers on the floor? Any wooden furniture if not designed to carry a speaker will resonate and cause vibration like sound.

Also, 120hz is too high to cross the speaker, giving too much to the sub. Cross the speakers at 90hz and set the Bass in your LFE section to 100-110.

MaSh