Design	Three-way bass reflex, single apparent source driver configuration
Drive Units	Uni-Q driver array:  MF: 125mm (5") Li-Mg-Al /LCP hybrid cone  HF: 25mm (1") Al dome  Bass units:  LF: 4 x 225mm (9") with force cancelling
Frequency Range	28Hz ~ 45kHz (-6dB) free field 20Hz (-6dB) typical in room bass response
Frequency Response	40Hz ~ 35kHz ± 3dB (-6dB at 28Hz)
Crossover Frequencies	350Hz, 2.3kHz
Maximum Output	117dB (peak sound pressure level at 1m with pink noise)
Amplifier Requirements	50 ~ 400W
Sensitivity	91dB (2.83V/1m)
Harmonic Distortion	2nd & 3rd harmonics (90dB, 1m) <0.5% 40Hz~100kHz  <0.2% 200Hz~10kHz
Impedence	4Ω (min.3.2Ω)
Dimensions	1590 x 363 x 540mm/62.5" x 14.3" x 21.2" (with plinth H x W x D)
Weight	57.2kg (126lbs)