PreSonus ULT18 Active Sound-Reinforcement Subwoofer


PreSonus ULT18 Active Sound-Reinforcement Subwoofer


The PreSonus ULT18 Active Sound-Reinforcement Subwoofer is an 18″ custom woofer with a 4″ voice coil driven by 2000W of Class-D power in a direct-radiating ported enclosure. Designed to complement any full-range PA loudspeaker, it can be used to deliver low-frequency performance in sound-reinforcement applications for live stage, theater, clubs, and more.

The speaker inputs feature two combo XLR-1/4″ connectors with direct outputs and polarity invert. The subwoofer’s low-frequency transducer and voice coil provide 7mm of driver travel before reaching over-excursion. This allows it to push more air and bring more thump. In addition, a built-in variable low-pass filter lets you dial in the upper-frequency limit.

Designed with M10 fly points, ground-stacking provisions, castor provisions, and a defeatable front-panel LED, the ULT18 active subwoofer is a suitable choice for both mobile or install applications.

18-inch custom low-frequency driver with 4″ voice coil
2000W of Class-D power
Two combo XLR-1/4″ inputs with direct outputs
7 mm driver travel before over-excursion
Defeatable front-panel LED
Rugged, texture-painted birch enclosures with tour-grade 16-gauge steel grille
Comfortable ergonomic handles
UPC: 673454004551
Categories: ,
Configuration Active Subwoofer
Total Power Capacity 2000 W Peak
LF Driver 1 x 18″ / 45.7 cm Woofer
LF Voice Coil 4″ / 10.2 cm
Frequency Range 42 Hz to 250 Hz ±3 dB
Maximum SPL 135 dB
Signal Processing
Crossover 90 Hz
Mounting 12 x M10
Dimensions 22.5 x 24.5 x 25″ / 57.1 x 62.2 x 63.5 cm
Weight 90 lb / 40.8 kg

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