RT16 Buzz

w3ave

So a MW8103 decided to develop a small buzz when playing music. I used several fingers and pressed the woofer in and out to see if there was the tell tale scratching sound of driver death and i heard nothing. If i press the woofer in a few times the buzz dissipates for a while. What does this sound like and can i fix it?
Thanks in advance.

PS I'm in the market for a MW8103 if anyone is selling. Nice to have a spare...