Nieuw in doos. Frequency Response 60 Hz — 30 kHz Sensitivity (1W@1M) 91 dB Nominal Impedance 6 ohms Power Handling (RMS) 150 W Recommended Amplifier Requirements 40 — 150W Bass Alignment Bass reflex. Ported front and rear. Drive Unit Complement 2 x 5.5" MMP II bass mid-range 1 x 1" C-CAM Gold Dome tweeter External Dimensions (Including Plinth (H x W x D)) 165 x 460 x 165 mm (6 1/2 x 18 1/8 x 6 1/2 ") Weight (each) 6.2 kg (13.6 lb