This Is A Brand New Aftermarket Diaphragm SD-75BF For P Audio Turbosound SD-75BN Driver & SD75BN.8RD Driver Please Look And confirm The Diaphragm You Are Ordering Matches The Pictures Above & The Specs Below Specs: Voice Coil Diameter: 3" (76.2 mm) Diaphragm Material: Blue Titanium Nominal Impedance: 8 ohms