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.
Key features:
- 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
Technical Specifications
Acoustic Performance |
|
|---|---|
| Configuration | Powered subwoofer, ported |
| Frequency Response (-3 dB) | 45 Hz – 250 Hz |
| Maximum Peak SPL | 135 dB |
| Crossover Frequency | 90 Hz |
Transducer |
|
|---|---|
| LF Transducer | 1x18" Ferrite |
| Voice Coil Diameter | 4" |
Amplifier |
|
|---|---|
| Type | Class D |
| 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 |
| Controls | Output Level Low Pass Filter Preset Select Polarity Invert On/Off Mono On/Off Front LED On/Off |
| Indicators | DSP Preset, Polarity Invert On/Off, Mono On/Off, Front LED On/Off, Signal, Clip, Thermal |
DSP |
|
|---|---|
| Presets | Extended LF |
| Polarity | Normal or Reverse |
| Bit Depth | 24-bit |
| Sample Rate | 96 kHz |
Enclosure |
|
|---|---|
| Material | Eucalyptus Plywood |
| Finish | Chemline™ polyurethane |
| Grille | Powder-coated steel |
| Dimensions (HxWxD) | 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) |
Safety |
|
|---|---|
| Amplifier Protection | Over-current, DC, over/under-voltage, over-temperature, high frequency |
| Transducer Protection | limiter |
Power |
|
|---|---|
| AC Power Input | 100-230V~, 50-60 Hz |
| AC Power Consumption (1/8 Power) | 150W |
Suspension Mounting |
|
|---|---|
| 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.
