Originally Posted by ucla92
.... I don't want to cut anymore ceiling than necessary..
The rubber mat material the feed stores sell for horse trailers would probably make an excellent vibration absorber - It's cheap and easy to cut and install thru the speaker hole - but it smells like old tires and would be flamable - but no more so than wooden boxes. - haven't used it myself so far because I had scrounged enough of the expensive foam/lead material mentioned earlier