Presonus AIR-series AIR18s - Subwoofer - for PA system - 18"

Key Features and Benefits:

• Extensive controls enable customized performance
  Since each venue has unique acoustics and each application makes different demands on a sound system, Presonus has equipped AIR 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 low-pass 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 castor 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 combo XLR and 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
  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 away. AIR subwoofers also are equipped with a variable low-pass filter, that allows you to dial in the optimal crossover point for your system. Optimized settings are provided for the full-range loudspeakers.
• Easily create subwoofer arrays
  Many subwoofers are essentially omnidirectional, radiating sound around the entire cabinet, which can cause feedback onstage and make monitoring more difficult. Creating a subwoofer array helps keep excess energy off of the stage and in the audience where it is needed. AIR subwoofers provide the tools you need to create these arrays with ease.
• Hearing is believing
  With flexible connectivity; a rugged, tour-grade enclosure; and plenty of power, the AIR18s delivers the versatility and punch needed for permanent installs. Yet it's relatively lightweight and portable, making it an excellent choice for mobile use. Although designed to complement AIR full-range loudspeakers, the AIR18s is also an excellent companion for third-party loudspeakers. More important, it sounds great, delivering outstanding low-end clarity and natural music reproduction.