Aquarian Drumheads RSM18BK Regulator Black 18" Bass Drum Head, Gloss Black 20 It is delivered with hundreds

It is delivered with hundreds of presetsand predefined models

including the API 2520 Op Amp

Enclosed in a rugged steel enclosure offering excellent shielding

Peak Diaphragm Displacement Volume (Vd): 44cc

but with room ambiance

Aquarian Drumheads RSM18BK Regulator Black 18" Bass Drum Head, Gloss Black 20 It is delivered with hundredsThese single ply, resonant bass drumheads feature Aquarians patented "Floating Muffling System." They are perfect companions for the Super Kick and Impact series batter heads. The Regulator heads are available in Video Gloss black or white. They are available with a large 7" hole in the center, a 4 " hole off set, or a full head with no hole. Regulator Gloss Black 10mil thick drumhead 10" centered felt muffle ring Small 4 3 4" offset hole Resonant