I think I have seen a thread on this before but have had no luck finding it. I have amplified JL 6.5 marine speakers in my sound bar (sound phenomenal) but recently have been noticing the bar has been beginning to vibrate/rattle mostly during low, longer duration frequencies (aka bass). I can grab the sound bar with my hand a squeeze it and the rattle disappears. What is a good solution to stopping this, or at least a good previous thread to read. TIA