Chosen Solution
The 10 inch woofer on one tower speaker (Boston Acoustic T930) rattles with deep, loud bass. I replaced the foam on this woofer and did not do a perfect job leaving a slight ripple in the foam. Could this be the problem, or is the cone or speaker likely damaged? Other than on deep, loud bass the speaker sounds fine.
something could be rattleing from within it make sure all the screws are very tight because the bass will loosen then other long periods of time