PreSonus AIR XD Sub 18 – an active PA subwoofer with a custom 18" low-frequency driver (3" voice coil), 2,000 W peak Class-D amplifier, advanced DSP with a 2.6" full-color LCD, variable lowpass filter (60–150 Hz), cardioid and end-fire array presets, and Bluetooth TWS Bridge Mode. Maximum SPL: 130 dB.
The AIR XD Sub 18 is designed for both mobile PA and permanent installs – event venues, clubs, theatres and touring rigs. The 18" driver with an enlarged 3" voice coil provides efficient heat dissipation and clean power handling at high continuous levels, extending down to 33 Hz at –10 dB. The 2,000 W Class-D amplifier delivers 130 dB maximum SPL with consistent headroom and low distortion across demanding, long-duration applications.
DSP and array configurations without manual calculations
The DSP section with 2.6" full-color LCD provides fast access to all system parameters. The variable lowpass filter (60–150 Hz) lets you dial in the crossover point to match any full-range top without an external processor. Alignment delay up to 12 metres compensates for the time offset between the subwoofer and full-range speakers placed at different distances. Cardioid and end-fire array presets reduce manual phase and delay calculations to a few button presses, concentrating low-frequency energy toward the audience and reducing stage spill. A "Mo' Bass" mode extends low-frequency energy for applications where additional impact is required. Polarity invert is also available.
Connectivity and portability
Two combo XLR/1/4" inputs with direct Mix Out XLR outputs handle flexible signal routing to additional speakers or a mixer. Bluetooth TWS Bridge Mode enables wireless audio streaming and stereo pairing with a second AIR XD unit – no additional hardware or cables required, useful for corporate events and mobile setups. The 15 mm wood enclosure with ergonomic side handles, ground-stacking guides and built-in hardware for the included caster kit supports fast transport and deployment in ground-stacked, arrayed or permanently installed configurations.
KEY FEATURES
- Custom 18" LF driver with 3" voice coil and enlarged motor assembly
- 2,000 W peak Class-D amplification – 130 dB maximum SPL
- Frequency response: 41 Hz – 110 Hz (±3 dB) / 33 Hz – 131 Hz (–10 dB)
- DSP: variable LP filter 60–150 Hz, alignment delay up to 12 m, polarity invert
- Array presets: normal, cardioid, end-fire + "Mo' Bass" mode
- AIR XD full-range loudspeaker integration presets (plug-and-play)
- Display: 2.6" full-color LCD with metering and DSP navigation
- Inputs: 2× combo XLR/1/4" TRS; outputs: 2× Mix Out XLR
- Bluetooth TWS Bridge Mode – wireless stereo streaming and speaker pairing
- 15 mm tour-grade wood enclosure, ergonomic handles, stacking guides, caster kit included
TECHNICAL SPECIFICATIONS
- LF driver: 18", 3" voice coil, custom
- Amplifier power: 2,000 W peak, Class D
- Frequency response (±3 dB): 41 Hz – 110 Hz
- Frequency response (–10 dB): 33 Hz – 131 Hz
- Maximum SPL: 130 dB
- Low-pass filter: 60–150 Hz (variable)
- Alignment delay: up to 12 m
- Array presets: normal, cardioid, end-fire, Mo' Bass
- Display: 2.6" full-color LCD
- Inputs: 2× XLR/1/4" TRS combo
- Outputs: 2× Mix Out XLR
- Bluetooth: TWS Bridge Mode (streaming + stereo pairing)
- Enclosure: 15 mm wood, caster kit included
