Model MA-15 Driversã?? LF: 1*15" / HF: 1*.75" Rated Power 400W Rated power 800W Nominal impedance 8 ohms Frequency Range 48Hz-20KHz Sensitivity(1m/1W) 98dB MAX SPL 127dB Dispersion(HxV) 90°*60° Construction Enclosure Material High Density Fiberboard Enclosure Grille Air permeable cotton in black round hole dustproof steel mesh Finish Black environmental water-borne abrasion-resistant paint (customized color according to customer requirements) Dimensions(W*D*H)mm) 440*370*678 Net weight (Kg) 25.1Kg