Replacement Diaphragm For Peavey 14XT & PR, TLS, PV-12M, PV-15M, Impulse 100, SSE This is a brand NEW PEAVEY 14XT 8 ohm Aftermarket Diaphragm for PV-12M, PV-15M, Impulse 100, SSE series It fits several PEAVEY PR & TLS MODELS.This is a titanium diaphragm and handles the same amount of power and sounds just like the original. Specs : Overall Diaphragm Diameter: 2.81" (71.36mm) Voice Coil Diameter: 1.35" (34.4mm) Diaphragm Material: Titanium Impedance: 8 ohms DCR: 6.0 ohms.