Specifications: HV121 II Mounting hardware included Nominal Impedance 4 Ω Frequency Response (1) 22 Hz - 250 Hz Crossover Frequency 50 Hz – 250 Hz Variable; 24 dB/Octave + LFE Setting Low Pass Crossover 50 Hz – 250 Hz Variable; 24 dB/Octave + LFE Setting Amp Power 150 Watts Colors Black Textured Height (SM = Height) 425.5 mm / 16.75" Diameter (SM = Width) 400.1 mm / 15.75" SM Depth (Including Bracket) 419.1 mm / 16.5" Weight 10.91 kg / 24 lb Shipping Weight 12.73 kg / 28 lb Regulatory - RoHS appro