Electro-Voice Factory Speaker Replacement Horn Diaphragm 89486A-Faceplate, ST350, T35 Factory Electro Voice replacement speaker diaphragm part # 89486A-Faceplate Specs: Voice coil: 1" (25mm), Faceplate Diameter: 2-5/8" (67mm), Impedance: 8 ohm, DCR: 6 ohm Factory AUTHORIZED service and parts. FREE technical support. FAST & FREE shipping to any USA address. SUPERIOR quality, LARGEST selection, and the BEST prices!