Damping Material, Grill Cloth & Carpet Dampening Material      Black Hole Products       Dacron & Foam                                                                                                                                                 Grill Cloth Unlike ordinary fabric, grill cloth is manufactured to be acoustically transparent - meaning it does not "muffle" the sound. Grill cloth is also relatively transparent to the infrared signal from remote controls. Use grill cloth to re-stretch speaker grills  or restore your  system so it looks new again! Acoustone Grill Cloth Speaker City Grill Cloth   Speaker Carpet