The Alto Professional TS318S is a rugged 2,000W powered subwoofer. It features an 18” driver and Class-D amplification. This active subwoofer has XLR outputs with six discrete DSP output modes. Its redesigned enclosure is made from MDF and is internally braced for rigidity. The cabinet boasts a splatter-spray finish that resists scratches. An integrated 36 mm pole socket lets you easily install a speaker pole for mounting a full-range speaker. This powered sub is ideal for mobile DJs and other performers who want massive low-end reinforcement. The TS318S active sub gives your existing live sound PA system the bass your audience craves. The sub’s Polarity Reverse and Extended LF switches put you in control of your system’s EQ.