Low-end punch you can hear and feel.
Designed to complement any full-range PA loudspeaker, and a perfect companion for the PreSonus® full-range boxes, the ULT18 subwoofer delivers a powerful, clear low-end punch.
With 135 dB output from 2,000 watts of Class D power and a direct radiating, ported enclosure, it has all the muscle needed for detailed low-frequency performance in a wide range of applications. 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 faster. Over-current, DC, over/under-voltage, over-temperature, and high-frequency protection ensure reliability.
Equally at home in mobile and installed systems.
The ULT18 has two combo mic/line inputs and a Direct Output with level control. DSP presets provide extended low-frequency performance or a more natural response to suit a variety of applications. Other features include a variable lowpass filter, polarity invert with indicator, mono on/off with indicator, and front-panel LED on/off with indicator. Indicators are also provided for Preset, Signal, Clip, and Thermal.
This quality subwoofer features a eucalyptus plywood enclosure with tough Chemline™ polyurethane coating, power-coated steel grille, 12 M10 mounting points, and ground-stacking capabilities.
- 18-inch custom woofer with 4-inch voice coil
- 2,000W Class D power
- 2 combo XLR/¼” TRS inputs
- Variable Low Pass control
- Direct Output
- Extended LF DSP mode preset with LED indicator
- Polarity Invert On/Off, Mono On/Off, Front LED On/Off, Signal, Clip, Thermal LEDs
- Locking IEC connection
- Rugged, texture-painted eucalyptus plywood enclosure
- Tour-grade 16 gauge steel grille
- Comfortable ergonomic handles
- 12 integrated M10 rigging points for suspended horizontal and vertical installation
|Configuration||Powered subwoofer, ported|
|Frequency Response (-3 dB)||45 Hz – 250 Hz|
|Maximum Peak SPL||135 dB|
|Crossover Frequency||90 Hz|
|LF Transducer||1x18" Ferrite|
|Voice Coil Diameter||4"|
|Total Power Output||2,000W Peak (1,000 RMS)|
|LF Power||2 x 500W bridged (1000W total)|
|Cooling||Free air convection|
|Rated THD||<0.05% (20 Hz - 20 kHz)|
|Dynamic Range||119 dB (A-weighted)|
|Bandwidth||20 Hz - 20 kHz|
Connections and Controls
|Input Channels||2 line|
|Input Connector Types||2 combo|
|Line Input Impedance||10 kΩ|
|Maximum Input||+22 dBu|
|Output Connector||2 XLR (M): Mix out, Direct out|
Low Pass Filter
Polarity Invert On/Off
Front LED On/Off
|Indicators||DSP Preset, Polarity Invert On/Off, Mono On/Off, Front LED On/Off, Signal, Clip, Thermal|
|Polarity||Normal or Reverse|
|Sample Rate||96 kHz|
|Dimensions (HxDxW)||22.5” x 25” x 24.5” (572 mm x 635 mm x 622 mm)|
|Unit Weight||95 lbs. (43 kg)|
|Handles||2 (One on each side)|
|Amplifier Protection||Over-current, DC, over/under-voltage, over-temperature, high frequency|
|AC Power Input||100-230V~, 50-60 Hz|
|AC Power Consumption (1/8 Power)||150W|
|Rigging Points||12 M10|
|Mounting||Ground stack provisions|
As a commitment to constant improvement, PreSonus® Audio Electronics, Inc., reserves the right to change any specification stated herein, at any time, without notification.