my sub woofer keeps making a very loud buzzing noise iv done every thing i can think of its a sony surround sound

g, July 2008

assuming all external parts are secure:
have a look inside the speakers box and check
everything is screwed or glued in properly
if ok:
the most likely cause is a damaged speaker

while you have the back off the cab. take the speaker
model details and replace the speaker

al, July 2008