JBL Factory Speaker Replacement Horn Diaphragm 2408J, D16R2408 JBL Factory Speaker Diaphragm part # D16R2408. Specs: Voice coil: 1-1/2" (38mm), Diameter: 2-3/4" (70mm), Impedance: 16 ohms Factory AUTHORIZED service and parts. FREE technical support. FAST & FREE shipping to any USA address. SUPERIOR quality, LARGEST selection, and the BEST prices!