rkeman Messages: 78 Registered: March 2010 Location: Florida
Viscount
The H290C does not absolutely require further damping. If damping Is desired, the 1/2 inch Sonic Barrier material available from Parts Express offers an easy solution that works quite well. It is adhesive backed and totally damps the little ringing that the stock H290C exhibits. It is is much less messy to use than caulking and seems to be more effective.