Alto ELVIS 15S MKII

15" Passive Subwoofer Speaker Cabinet Power System: 300W continuous (AES Standard) Impedance: 4Ω (nominal) Maximum SPL @ 1m: 121dB continuous/124dB peak (Calculated) Transducer Low: 15" woofer, 2.5" voice coil, with double ventilation Sensitivity (1w @ 1mt): 97dB SPL Enclosure Construction: Chipboard cabinet, glued and reinforced, covered in black carpet; black metal corner and rubber foot Dimensions (HxWxD): 558 x 438 x 506.7 mm (21.97" x 17.24" x 19.95") Net Weight: 24.96kg (55.03lbs)