This is a high quality aftermarket BEYMA 5MCP385N8 For CP 385, SMC280ST, EAW 806061, CD-2522 Diaphragm Also Fits EAW CD2522 High Frequency Driver. 803047, 806061 CD-2522, CD 2522, CD2522, DM-2522, DM 2522, DM2522, FR129Z, FR-129Z, FR153Z, FR-153Z, FR159Z, FR-159Z. Please Look And Make Sure The Diaphragm You Are Ordering Matches The Pictures Above & The Specs Below Overall Diaphragm Diameter: 3 1/2" (88.9mm) Voice Coil Diameter: 1.5/8" (41.2mm) Nominal Impedance: 8 ohms