SW-115B Passive subwoofer speakers lowest frequency extension can reach 131dB maximum SPL 37-300HZ use Finnish birch imported sheet, effectively preventing interference with triple resonance aluminum short ring in order to reduce intermodulation distortion, reduce heat coil low port compression and optimized cabinet design brings close and accurate bass response Description Specification Product Advisory Technical parameters Type: passive subwoofer applications: distributed sound design of ultra-low frequency, touring and fixed installation rated power: 700W (AES) Peak Power: 1400W Frequency range: 37Hz-300Hz Sensitivity: (1w @ 1m): 99db Maximum SPL: 131dB (peak) angle of coverage: 360 ° crossover system: passive subwoofer Nominal Impedance: 8 Ohm Input Interface: 2 * NL4 (NEUTIK), 1 + / 1- Products unit Bass: 1 * 15 "unit (waterproof, 4" voice coil) Treble: - Case exterior casing color: water-based paint points, Black can Selected Materials: Finland imported birch cabinet size: 500mm * 450mm * 600mm (H * W * D) Weight: 36kg