Diaphragm For Peavey 14XT & PR, TLS, PV-12M, PV-15M, Impulse 100 BY ZXPC This is a titanium diaphragm. this diaphragm handles the same amount of power and sounds just like the original Voice Coil Diameter: 1.35" (34.4mm) Diaphragm Material: Titanium This is a brand new PEAVEY 14XT 8ohm aftermarket diaphragm. PV-12M, PV-15M, Impulse 100, SSE series It fits several PEAVEY PR & TLS MODELS.