SR18S

The SR18S is an 18 inch powered subwoofer with a 1600W Class-D amplifier and a custom high-efficiency transducer, built for musicians, DJs, events, and venues that run the same rig night after night. Response reaches down to 33 Hz with 133 dB max SPL, so kick drums and synth bass land with weight instead of thinning out. Adding a sub does more than extend low end: it takes bass duty away from your full-range cabinets, which raises the efficiency and output of the whole system. Three voicing presets tailor the low end to the gig. Flat keeps a natural balance, Deep pushes ultra-low frequencies for dance, rap, and electronic sets, and Punch prioritizes output level for bands and rock. A variable crossover frequency, polarity invert switch, variable level control from -6 dBU to +6 dBU, and stereo or mono summing let you set it up for one sub or a pair without outside processing. Stereo XLR inputs sit alongside stereo full-range and stereo high-pass XLR outputs, so feeding your tops is a single cable move. A dedicated processing module watches the amplifier in real time and holds tonal balance even under heavy limiting, while input limiting catches a hot source. The universal power supply with power factor correction stays stable on questionable venue power. A rugged wood cabinet, steel grille, integrated pole cup, and defeatable front LED finish it off.