TP Audio Aftermarket Diaphragm for EV DH2010, DH3, 2010A - Electro Voice Overall Diameter: 2.0"--50.8 mm Voice Coil Diameter: 1.25" --32 mm Nominal Impedance: 8 ohm Diaphragm for Electro Voice DH3, DH2005, DH2010 horn drivers and many other models.