CSA Diaphragm for JBL 2415H, 2416H, 2417H, D8R2416-1 -- 8 ohm Circuit Shop Audio Diaphragm Fits JBL 2415H, 2416H and 2417H drivers Replaces JBL Part numbers D8R2415 and D8R2416-1 Impedance: 8 ohm