Designed to complement the TT 515-A or any full-range speaker, the RCF TT 808-AS is a dual 8" high-powered active subwoofer well suited for bands, DJs, clubs, touring companies, and rental houses. The subwoofer's integrated bi-amplifier delivers 2000W peak to two 8" drivers, which offer a frequency range of 40 to 400 Hz with a maximum SPL of 129 dB, making it great for small to midsized venues and touring applications.