JBL Factory Speaker Replacement Horn Diaphragm 2425, 2425J, 2426, 2427, D16R2425 JBL Factory Speaker Diaphragm part # D16R2425. Specs: Voice coil: 1-3/4" (45mm), Diameter: 3" (76mm), Impedance: 16 ohm, DCR: 7.2 ohm Factory AUTHORIZED service and parts. FREE technical support. FAST & FREE shipping to any USA address. SUPERIOR quality, LARGEST selection, and the BEST prices!