Presonus ULT18 18” Active Subwoofer

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 of Class D power and a direct radiating, ported enclosure, it delivers the detailed low-frequency performance audio pros demand.

Its custom 18-inch 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. A variable lowpass filter (rare in this class) lets you dial in upper frequency limit. The ULT18 also offers M10 fly points, ground stacking provisions, castor provisions, and a defeatable front-panel LED, making it a great choice for both mobile and install applications.

Specifications

• 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