Presonus Air 18S 18″ 2-Way Active Subwoofer

AIR18s: Powerful, clear, accurate low end.
Designed to complement any full-range PA loudspeaker and a perfect companion for the PreSonus® AIR10, AIR12, and AIR15, the AIR18s subwoofer delivers a powerful, clear, and accurate low-end punch. With its 18-inch low-frequency transducer, driven by 1,200 watts of Class D power, it provides plenty of detailed bottom end—all the way down to 30 Hz. Yet it is portable and well suited for mobile applications, as well as installed systems.

Extensive controls enable customized performance.
Since each venue has unique acoustics and each application makes different demands on a sound system, we’ve equipped AIR-series subwoofers with easy-to-use controls and signal-processing presets. Set your subwoofers for normal front-of-house use or get an even bigger low-end with the Mo’ Bass preset. Set them to perform in an array. Reverse polarity, use the lowpass filter to set a crossover frequency, 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.

Equally at home in mobile and installed systems.
Although it has a rugged, tour-grade birch enclosure, the PreSonus® AIR18s is much more compact and lightweight than you’d expect from a subwoofer that can deliver this much power. With integrated provisions for the included caster kit, ground-stacking provisions, and ergonomic handles on both sides, it’s easy to transport for mobile applications, while offering the features and performance needed for demanding installs. The AIR18s sports two combo XLR and ¼-inch TRS line-level inputs with level control, and throughputs are provided to connect full-range systems or multiple subwoofers in larger systems. You can even defeat the front power-indicator LED for low-visibility installs.

Plays well with others.
Although we recommend AIR-series full-range loudspeakers, AIR18s subwoofers can be used with virtually any full-range loudspeaker. Whatever full-range speaker you choose, aligning the subwoofer to its full-range companion will yield tighter bass response. AIR18s subwoofers make it easy, with a variable alignment delay that properly aligns your three-way system, whether the full-range loudspeaker is placed atop the subwoofer, using the sub pole, or is placed a few feet away. AIR-series subwoofers also are equipped with a variable lowpass filter that allows you to dial in the best crossover point for your system. Optimized settings are provided for the AIR10, AIR12, and AIR15 full-range loudspeakers.

Features
Main Components
1,200W (dynamic) Class D power amp
18-inch woofer with a 3-inch voice coil
Frequency response: 30 to 150 Hz
Max SPL: 129 dB
2 combo XLR-¼-inch line inputs and two XLR direct outputs
Controls
Easy-to-use DSP performance presets:
Normal — typical FOH use
Mo’ Bass — extended low-end performance
Locate—adjusts 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 endfire cardioid subwoofer array (using two of the same model subwoofer)
Fully variable lowpass filter (sets the upper frequency limit/crossover point) LP filter presets for use with AIR15, AIR12, and AIR10
LP filter presets for use with AIR15, AIR12, and AIR10
Alignment delay — adds delay time relative to full-range speaker
Polarity — invert the polarity of the summed input signal
Convenience Features
2 comfortable ergonomic side handles
Ground-stack provisions
Caster provisions (caster kit included)
Defeatable front-panel LED
Rugged, texture-painted, birch enclosure
Tour-grade, 17 gauge steel grille

Technical Specifications
Acoustic Performance
Configuration Active vented design
Frequency Range (-3 dB) 30 Hz to 150 Hz
Maximum Output 129 dB SPL
Transducer
LF Driver 18” (3” voice coil)
Amplifier
Amplifier Type Class D
Total System Power 1,200W dynamic (600W continuous)
Connections and Controls
Inputs 2 x XLR/TRS line combo
Outputs 1 x XLR Link Out
DSP
DSP Features LCD screen with EQ and multiple presets
Enclosure
Cabinet 15 mm plywood
Grille 1.5 mm steel
Handles 2 side
Mounting Ground-stack provisions
Dimensions (H x W x D) 26″ x 19.3″ x 25.8″ (662 mm x 490 mm x 656 mm)
Weight 83.8 lbs (38 kg)
Power
Power Input 115V / 230V ~50/60 switchable
Maximum Current 5.3A (230V-50 Hz), 10.6A (120V)