JBL introduces its most powerful studio subwoofer for applications where very high continuous output and extremely low frequency response are required. With a room response below 18Hz and a peak output of 137dB, the SUB18 delivers unprecedented performance for demanding dance music production, while providing the exceptional accuracy required in film post-production applications. As a complement to JBL’s M2 Master Reference Monitor system, the SUB18 enables three times the system output.