Type2 ½-Way, Bass Reflex Woofers 2 × 150 mm Ø, AS Woofer Tweeter JET 6 Crossover Frequency 450 | 2400 Hz Frequency Range 30 - 50,000 Hz Sensitivity 87 dB at 2.83 V/m Suitable for amplifiers from 4Ω - 8Ω Recommended Amplifier Power 40 - 300 W/channel Nominal | Peak Power Handling 130 W | 170 W Nominal | Minimum Impedance 4Ω | 3.5Ω Finishes Black High Gloss, White High Gloss Height x Width x Depth 985 x 260 x 300 mm Weight19.0 kg