Odd resonance from center channel

shweetpickens

I was hoping someone could give me some suggestions. I have a full Polk surround with a csi3 full sized center channel speaker. It has worked fine for 8 months but lately with loud voices at certain frequencies there is a sort of resonance or vibration almost at different voice pitches only if turned up louder. I have changed TVs and tv stands since I noticed it, but can't detect any sort of vibrations from the stand itself. Any suggestions?

[Deleted User]

Hello,
The usual procedure is to exchange the center speaker for either the right or left channel and see how it sounds in a different position. If you do tend to play your system at fairly high volumes try setting the center to "small" to introduce a high pass filter to reduce lower frequencies.
Ken

shweetpickens

Thanks that is great advice i will try that