Type 2 ½-Way, Bass Reflex Woofer 2 × 180 mm Ø, AS-XR Cone Tweeter JET 6 Magnetic Shielding No Crossover Frequency 450 | 2550 Hz Frequency Range (IEC 268-5) 28 - 50,000 Hz Sensitivity 88.5 dB at 2.83 V/m Suitable for amplifiers from 4Ω - 8Ω Recommended Amplifier Power 40 - 400 W/channel Nominal | Peak Power Handling 150 W | 220 W Nominal | Minimum Impedance 4Ω | 3.4Ω at 180 Hz Finishes Black High Gloss, White High Gloss, Walnut High Gloss Height x Width x Depth 1142 x 276 x 332 mm Weight 27.1 kg