This Is A Brand New Aftermarket BMS 4540ND Replacement Diaphragm @ 16 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: 12 Ohms Nominal Impedance: 16 ohms Most Orders Placed Before 3PM and Paid thru PayPal Are Shipped The Same Day; Monday to Friday.