This Is A Brand New Aftermarket BMS 4538 Replacement Diaphragm @ 8 ohms. Please Look And Confirm The Diaphragm You Are Ordering Matches The Pictures Above & The Specs Below. Specs: Overall Diaphragm Diameter: 2.76" (70.2mm) Voice Coil Diameter: 1.50" (38.1mm) DCR: 6 Ohms Nominal Impedance: 8 ohms Most Orders Placed Before 3PM and Paid thru PayPal Are Shipped The Same Day; Monday to Friday