Type: 3-way triple 8" floorstanding loudspeaker; Low-frequency transducer: Three 8" (200mm) Deep Ceramic Composite aluminum cones, with cast frames; Midrange transducer: 5-1/4" (130mm) Deep Ceramic Composite aluminum cone, with cast frame; High-frequency transducer: 1" (25mm) Beryllium dome, with acoustic lens waveguide Recommended amplifier power range: 50 – 300 watts; Nominal impedance: 8 ohms; Sensitivity (2.83V/1m): 91 dB; Crossover frequencies: 240Hz; 2.1kHz; Enclosure type: Bass-reflex via dual rear-mounted ports; Inputs: Dual