JBL MRX528S Style Subwoofer The MRX528S is a portable, dual eighteen-inch, subwoofer speaker system. Specifications: Power Rating: 1000 W / 2000 W / 4000 W Frequency Range: 35 Hz - 250 Hz Dimensions (H x W x D): 1095 mm x 535 mm x 700 mm (43 in x 21 in x 27.5 in) Sensitivity: 97 dB SPL; 103 dB SPL Frequency Response: 40 Hz - 250 Hz Nominal Impedance: 4 ohms Rated Maximum SPL: 133 dB SPL (139 dB SPL)*Calculated on half space condition Coverage Pattern: 70o x 70o nominal Weight: 55 kg (121 lbs. )
