The AIR18S by PreSonus is a powerful and adaptable 1200W subwoofer, designed for diverse applications such as live bands, DJs, and event spaces. Compatible with AIR10, AIR12, and AIR15 speakers, it enhances any sound system with its 600W Class-D amp driving an 18″ woofer, delivering a max SPL of 137 dB and a frequency range of 35 Hz to 150 Hz. The integrated DSP offers presets like Mo’Bass, FOH, Cardioid, and Endfire, ensuring optimal performance and bass distribution. It includes a variable low pass filter, alignment delay, power cord, and caster kit for easy setup and customization.