Two-way, reflex-loaded, magnetically shielded, stand-mounted loudspeaker. Drive-units: ferrofluid-cooled 1" aluminum-dome tweeter; 6.5" injection-molded, metalized polypropylene-cone woofer. Crossover frequency: 2.5kHz. Crossver slopes: 3rd-order Butterworth. Frequency response: 45Hz-23kHz,±3dB. Sensitivity: 89dB/2.83V/m anechoic, 91dB/2.83V/m in typical listening room. Recommended amplification: 10-100W.