Compact 18 Active Subwoofer for Professionals

The ULT18 subwoofer is a powerful and accurate low-end companion designed to complement any full-range PA loudspeaker, particularly the PreSonus ULT12 and ULT15. Delivering 2,000 watts of Class D power and featuring a direct radiating, ported enclosure, this subwoofer provides the detailed low-frequency performance that audio professionals demand.

At the heart of the ULT18 is a custom 18-inch low-frequency transducer with a 4-inch voice coil, capable of 7 mm of driver travel before over-excursion, allowing it to push more air and deliver a more impactful, thumping low-end. The variable low pass filter, a rarity in this class of subwoofer, enables users to precisely dial in the upper frequency limit, ensuring a seamless integration with the full-range speakers.

Versatile in its applications, the ULT18 offers a range of features that cater to both mobile and fixed installation scenarios. It boasts M10 fly points, ground stacking provisions, and castor provisions, making it easy to deploy in a variety of settings. Additionally, the front-panel LED can be defeated, allowing for discreet installations where low visibility is a priority.

Equipped with 2 XLR/¼" combo inputs and direct outputs, the ULT18 provides flexible connectivity options, enabling seamless integration into any sound system. The polarity invert feature further enhances the subwoofer's integration capabilities, allowing users to fine-tune the phase alignment between the subwoofer and the full-range speakers.

In summary, the ULT18 subwoofer is a powerful and versatile low-frequency solution that delivers a clear, accurate, and impactful performance. Its custom 18-inch woofer, Class D amplification, and variable low pass filter make it an exceptional choice for audio professionals seeking to enhance the low-end of their sound systems, whether in mobile or fixed installation applications.

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