Frequency response: 38Hz - 21kHz ±3dB on reference axis Sensitivity: 91dB spl (2.83V, 1m) Nominal impedance: 8 Ohms Recommended amplifler power: 5W - 200W on unclipped program within frequency domain Metric: (W x H x D) System: 267 mm x 368 mm x 95 mm Cut-out: 229 mm x 330 mm x 95 mm Net weight: 3.4 kg each