JBL Factory Speaker Replacement Horn Diaphragm 2408H-1, D8R2408-1 JBL Factory Speaker Diaphragm part # D8R2408-1 Specs: Voice coil: 1-1/2" (38mm), Diameter: 2-3/4" (70mm) Factory AUTHORIZED service and parts. FREE technical support. FAST & FREE shipping to any USA address. SUPERIOR quality, LARGEST selection, and the BEST prices!