Electro-Voice Factory DH1A-16,N/DYM-1-16 16 ohm Speaker Replacement Horn Diaphragm 81320XX Factory Electro Voice replacement speaker diaphragm part # 81320xx. Specs: Voice coil: 3" (76mm), Diameter: 5" (127mm), Impedance: 16 ohm, DCR: 12.7 ohm Factory AUTHORIZED service and parts. FREE technical support. FAST & FREE shipping to any USA address. SUPERIOR quality, LARGEST selection, and the BEST prices!