Alto Professional SX-SUB18 Passive Subwoofer

The frequency range and crossover of the TOURMAX SXSUB18 has been specifically tailored to provide smooth, low-end sound production in the 35 Hz - 200 Hz range. When combined with your two- and three-way speaker systems, your kick drum will thump, your bass guitar will rumble, and your beats will incite dance-frenzied masses to get their groove on. But that's not the only reason to add a SXSUB18 to your gigging rig. Having a sub's big low-end response often means that you can run your PA at a lower volume level while still retaining a large, full sound.