Originally Posted by cel4145
Contact HSU with that information. They'll definitely be able to tell you how to localize the problem from there.
I have. Instructions now are to swap the woofers between the subs and see if the noise follows the woofer. If not, I am going to swap the amps and see if the noise follows the amp. If at that point, the noise is still in the cabinet, it must be the cabinet. I did not get a chance to do that last night, but I am going to do this tonight as soon as I get home from work.
Originally Posted by ack_bk
Have you checked the feet? If you put pressure on the top of the sub with your hand does the rattling stop?
The feet are not installed. I have the subs sitting directly on Auralex GRAMMA isolators. I have tried putting pressure on the top, back, and sides, but it does not help the buzzing.
Originally Posted by shadyJ
You might try listening close to the ports. Maybe one of the ports has come loose.
I'll try, but not really sure this is a possibility. I guess if I swap all the components and the noise stays with the cabinet, then I'll have to look deeper into that possibility.