JBL Speaker Replacement Factory Diaphragm D8R2418 for 2418H, 2418H-1, D8R2418, EON15P, EON G2, MR 925, MR 935, and many others JBL Factory Speaker Diaphragm Part # D8R2418 , for JBL horn drivers 2418H, 2418H-1, and many others. Specs: Voice coil: 1-3/4" (45mm), Diameter: 3" (75mm), Length: 5-1/8" (130mm), Impedance: 8 ohm, DCR: 4 ohm Factory AUTHORIZED service and parts. FREE technical support. FAST & FREE shipping to any USA address. SUPERIOR quality, LARGEST selection, and the BEST prices!