Type 3-way dual 6.5" floorstanding loudspeaker; Low-frequency transducer Two 6.5" (165mm) 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 – 200 watts; Frequency response 44 Hz - 40 kHz (-6dB); Lowfrequency extension 33Hz (–10dB); 36Hz (–6dB); 48Hz (–3dB); Nominal impedance 8 ohms; Sensitivity (2.83V/1m) 90 dB; Crossover frequencies 260Hz; 2.1kHz; Enclosure type Bass-reflex via front-mounted port;