PA SUBWOOFER (SELF-POWERED) SONAR 115 Sub D is a powerful next-generation self-powered subwoofer to extend the bass response of full-range SONAR models, but also many other types of speakers. The 15'' high-performance woofer, 1500-watt power amplifier and HK Audio's meticulous acoustic engineering ensure an incredibly powerful bass experience. SONAR 115 Sub D offers: 15'' high-performance woofer, 1500-watt peak power, 24-bit DSP electronics, LCD screen with dimming function, Clear menu control of parameters such as Bass Boost, 2 input channels and 2 output channels, M20 pole mount adapter, Sturdy wooden cabinet, Metal grille front backed with black acoustic foam, Equipped for fitting transport rollers, 5-year manufacturer warranty after registration.