Massive Sound - Professional Features The frequency range and crossovers of Truesonic TSSUB18 and TSSUB15 are tuned to provide consistent, deep sound in the 37 Hz to 125 Hz range (42 Hz to 125 Hz for TSSUB15). It also offers stereo inputs, an internal active crossover, and is housed in a robust and compact 18mm birch plywood cabinet with durable metal handles. If you're ready to expand the frequency range of your live performance amplification, Truesonic subwoofers are an effective, economical, and professional choice. Truesonic Substance Exact details are planned and provided in Truesonic TSSUB18 and TSSUB15. From the latest digital power amplifiers to internal crossovers and carefully selected drivers, these are first-class subwoofers worthy of the Truesonic name. As active subwoofer systems, the Truesonic TSSUB18 and TSSUB15 offer a massive 18-inch LF long-throw driver and a large 15-inch LF long-throw driver, respectively. It's rated at a whopping 1200 watts and has a 3-inch copper sandwich voice coil, which means you'll have plenty of low-end volume when you need it most. Features 1200 Watts Class D power Powerful 18 low-frequency, long-excursion driver Stereo inputs: Mic/Line left channel, XLR right channel Stereo XLR outputs: left link, right mono, internal 120Hz crossover on through 18 mm birch plywood vented cabinet with metal grille and recessed handles Adjustable level and polarity controls 35 mm pole socket Specifications Powered System: Continuous 600 Watts, Peak 1200 Watts Frequency Response (-10dB): 37 Hz-125 Hz under analog processor Maximum SPL @ 1m: 123 dB Continuous / 126 dB Peak Transducer Low: 18 woofer, 3 copper sandwich voice coil, with long excursion Active Crossover: Band pass type 12 dB / oct. under analog processor Input Connectors: In-Left / Mono (Combo) Right (XLR-F) / Out-Left /Mono-Right (XLR-M) / Link-Left / Mono-Right (XLR-M) Balanced (15 kOhms) Input: Level L-R Input Line at 0 dBu Crossover Frequency: L-R output with high pass filter at 80 Hz or flat for L-R satellite External Controls: VOLUME Control / PHASE Switch / HPF-80Hz Bypass / Power on with green LED / Clip limiter with red LED / Ground lift Power Supply: 120-240 Volts in Switching Power mode Enclosure Construction: 18mm Plywood cabinet, glued and reinforced, resistant black paint, metal grille, rubber foot, four optional wheels Mounting: One standard metal pole-mount, two metal handle Product Dimensions (WxLxH): 20.7in x 22.8in x 28.6in Product Weight: 77.4 lb