High-Frequency Driver Components 1" (2.5 cm) beryllium tweeter; MidFrequency Driver Components 5 ¼" (13.3 cm) titanium cone midrange; LowFrequency Driver; Components Two 8" (20 cm) titanium cone woofers; Frequency Response -3 dB from 32 Hz to 45 kHz ±0.5 dB from 31 Hz to 18 kHz ±1.0 dB from 33 Hz to 20 kHz; Crossover Frequencies Three-way, high-order acoustic response @ 230 Hz and 2 kHz; Low Frequency Extension -10 dB at 21 Hz -6 dB at 25 Hz -3 dB at 32 Hz; Nominal Impedance 6 ohms (nominal) 3.7 ohms (minimum @ 90 Hz); Sensitivity 87.7 dB SPL with 2.83 V @ 1m (4 pi anechoic); Finishes Piano black or mahogany finish; Height 46.3"