Yamaha SOAVO-900CBL Two-way Dual-woofer Centre Speaker (Black) Dual 5" Advanced PMD cone woofer, and 1" aluminum dome tweeter Birch veneer cabinet with open-pore finish Three-way mitered-joint cabinet construction for a rigid body Edge-wound ribbon wire voice coil 56 Hz - 50 kHz (-10dB), 89 dB/2.83 V/1 m