General Description On-wall surround Enclosure Type Closed Transducer Complement 2-way Bass Driver 4.5" Woven carbon fibre x2 Treble Driver 3" Paper cone Sensitivity (2.83v @ 1m) 91dB Recommended Amplifier Power 30-160W Peak Spl 112dB Norminal lmpedance 4Ω Frequency Response (+/-3dB) 95 - 18kHz Crossover Frequency 2.5kHz Dimension (w x d x h) 164 x 181x 440mm Net Weight 6.1kg