Replacement Diaphragm compatible with JBL Compression Drivers - Model: SA-DR8, Contents: Replacement Diaphragm compatible with JBL Compression Drivers, Nominal Impedance: 8 Ohms, Compatible with the following JBL Series Drivers: 2425, 2426, 2427 and 2420 Compression Drivers, Dimensions: Diameter: 2.95 Inches | Voice Coil Diameter: 1 3/4", Weight: 0.07 lbs. each, Warranty: One Year Warranty. The SA-DR8 diaphragm replacement kit is an 8 Ohm diaphragm. This replacement diaphragm is made to be compatible with several JBL enclosures and sound just as good as the original. These are made just like the original and have matching specifications. The SA-DR8 is for use in JBL loudspeaker enclosures and is compatible with the following models: 2425 2426 2427 2420 Never be without the parts you need to keep the music going! Order replacement diaphragms from Seismic Audio and make us your one stop shop for all your Pro Audio loudspeaker needs.