PreSonus ULT18 Active Subwoofer

• 18-inch custom woofer with 4-inch voice coil
• 7 mm driver travel before over-excursion
• 2,000W Class D power (1,000W continuous)
• 2 XLR/¼” combo inputs with direct outputs
• Variable lowpass filter lets you dial in upper frequency limit
• Polarity invert
• Optional “Natural” tuning for less low-end extension and more punch
• Defeatable front-panel LED for low-visibility installs
• Rugged, texture-painted birch enclosures
• Direct radiating acoustic port
• Tour-grade 16 gauge steel grille
• Comfortable ergonomic handles
• Ground-stacking provisions
• M10 rigging points
• Integrated castor provisions (castor kit sold separately)
• Locking IEC connection

Low-end punch you can hear and feel
Designed to complement any full-range PA loudspeaker and a perfect companion for the PreSonus ULT12 and ULT15, the ULT18 subwoofer delivers a powerful, clear, and accurate low-end punch. With 2,000 watts (peak) of Class D power and a direct radiating, ported enclosure, it has all the muscle needed for the detailed low-frequency performance audio pros demand. Its custom 18-inch Kevlar low-frequency transducer with 4-inch voice coil provides 7 mm of driver travel before over-excursion to push more air and bring more thump.

Extensive controls enable customized performance
To provide maximum versatility, the ULT18 offers several important user controls. Unlike most subwoofers in this class, the ULT18 features a variable lowpass filter that enables you to accurately dial in the crossover transition between the subwoofer and your full-range system. Two DSP presets provide extended low-frequency performance or a more natural response to suit a variety of applications, and of course you get polarity reverse. A Mono Mode function is also provided to simplify cabling multiple mono subs in a stereo system.

Equally at home in mobile and installed systems
Like the full-range ULT12 and ULT15 loudspeakers, the ULT18 has a rugged, tour-grade birch enclosure for the distinctive performance characteristics that only wood can offer. A locking IEC power connector, M10 rigging points, integrated castor provisions, and ground-stacking provisions, making it a great choice for a wide variety of mobile and install applications. Two combo XLR and ¼” TRS line-level inputs with level control and throughputs are provided to connect full-range systems or multiple subwoofers in larger systems. As with the ULT12 and ULT15, you can defeat the front power-indicator LED for low-visibility installs.

Designed by WorxAudio
ULT18 loudspeakers were designed by WorxAudio, the commercial loudspeaker division of PreSonus. Headquartered in Greensboro, North Carolina, WorxAudio has been at the forefront of loudspeaker development for the pro touring and contractor markets for the over 30 years. WorxAudio continues to embrace the latest technology, delivering innovative products and installation designs for professional clients, and their products can be found in prestigious facilities worldwide. So you can rely on ULT loudspeakers to deliver the top-quality professional performance and features that touring engineers and systems integrators need.

Now Hear This
With extra-wide horizontal and focused vertical dispersion, a rotatable horn, ultra-long throw, a wood enclosure, and ample Class D power, the ULT15 is an excellent solution for permanent installations. Yet it’s also portable, making it a top choice for tours and other mobile use. Best of all, it sounds great, delivering outstanding speech intelligibility and natural music reproduction, with even coverage throughout the space.