PreSonus AIR15s Active 15" Subwoofer

Equally at home in mobile and installed systems, PreSonus AIR15s active subwoofers feature a 15-inch LF driver, driven by 1,200W of Class D power for a powerful, clear, and accurate low-end punch down to 35 Hz. DSP presets enable extended low-end performance and let you create ground-stacked or end-fire subwoofer arrays. A variable alignment delay properly aligns your three-way system. Use the lowpass filter to set a crossover frequency for a smooth transition from sub-bass to full-range, adjust the master output level of the power amplifier, even turn the grille LED off for install applications or set it to illuminate only when the protection limiter is engaged—all at the touch of a button. AIR15s subwoofers also include integrated ground-stacking provisions and a castor kit.
PreSonus AIR15s Active 15" Subwoofer features:

15-inch custom woofer with 3-inch voice coil
1,200W Class D power (dynamic)
35 Hz to 150 Hz frequency response
132 dB SPL (max)
Stereo 1/8"input
Locate controls adjust performance for arrayed and non-arrayed applications:◦ Normal – non-arrayed applications◦ Cardioid—create a ground-stacked cardioid subwoofer array (using two of the same model subwoofer)◦ Endfire – create an end-fire cardioid subwoofer array (using two of the same model subwoofer)
Variable lowpass filter lets you dial in upper frequency limit
"Mo’ Bass"tuning for extended low-end performance
Alignment delay up to 12m
Polarity invert
Defeatable front-panel LED for low-visibility installs
Rugged, texture-painted birch enclosures and tour-grade 17 gauge steel grille
Comfortable ergonomic handles, ground-stacking provisions, and castor provisions (castor kit included)