Product Description AS-118 sub bass system employs optimal venting which uses the resonance of the enclosure to maximize low frequency response by minimizing cone excursion and the resulting distortion. It makes the performance tight, even at the lowest frequencies. Product Feature 1. High-quality deep and powerful LF PA system with a max SPL up to 130dB 2. Reflex enclosure with low distortion 3. One 18" LF driver 4. Partner with AS full-range series to form high-quality sound reinforcement systems 5. Competitive price in sales Product Specification/Models 1. System:Sub-Woofer loudspeaker system 2. Frequency response(?dB):40Hz-350Hz 3. Driver quantity:Low DY-A181006x1 4. Impedance:8Ohm 5. Sensitivity:102dB 6. Maximum SPL:130dB 7. Power handling:400W 8. Peak power:800W 9. Nominal Coverage angle(HxV):NxA 10.Dimensions(WxDxHmm/Pcs):600x600x810 mm 11.Connectors:2xSpeakon| connectors (NL 4) Application 1. Concerts, band performances 2. Clubs, coffee bars and amusement venues 3. Multifunction halls, multimedia systems, emporiums and hotels