This is A Brand NEW Aftermarket Diaphragm GM-M-10 that fits many D.A.S models.This 8 Ohm diaphragm is an exact fit and replacement for the following D.A.S. Audio Enclosure, Speaker Box or HF Drivers D.A.S : Aero 48 ;D.A.S : SML-15, 15A, 12A ;D.A.S : SM-12A, 15A ;D.A.S : CA-28A, CA-28B ;D.A.S : Compact 115 D.A.S : M10, M10N Driver.