Presonus StudioLive 18sAI 18 Inch Active Subwoofer

Presonus StudioLive 18sAI

Presonus StudioLive 18sAI 18 Inch Active Subwoofer

RM10,260.00 RM11,400.00

Presonus StudioLive 18sAI 18 Inch Active Subwoofer

StudioLive® 18sAI Active Integration subwoofers deliver studio-monitor accuracy onstage with unprecedented onboard processing and networking features. PreSonus®Active Integration technology enables wireless and wired networking control for setup, tuning, and monitoring functions, using an iPad®, a Mac® or Windows® laptop, or both. Powerful and musical, the StudioLive 18sAI naturally extends low-frequencies with a fast and accurate transient response and is a perfect mate for StudioLive 312AI, 315AI, and 328AI full-range loudspeakers, making it an ideal choice for installations and mobile applications where fidelity matters.


Main Components
Controls and Networking
Convenience Features

·         18-inch ferrite transducer

·         1,000 watt (bridged), Class D amplifier

·         Active Integration 32-bit, 96 kHz DSP with variable crossover, dynamic limiting, and excursion limiting

·         Stereo line inputs (XLR-¼” combo) and switchable stereo/summed-mono line outputs (XLR)

·         Universal Switch mode power supply with power-factor correction

·         Ships with Ethernet connection for wired control; optional Dante™ card

·         Alignment delay (switchable: 0, 2, or 4 feet) enables subwoofer to be placed in different positions relative to a full-range speaker system

·         Wireless or wired networking with free SL Room Control software for Mac®, Windows®, and iPad® enables complete setup, tuning, and monitoring

o    Network Setup Wizard automatically detects each speaker and allows you to quickly connect to your wireless router network

o    Remote control over Maximum SPL/output level, high-pass filter, onboard operational modes, performance monitoring, mute, and speaker delay

o    31-band graphic EQ and 8-band parametric EQ (total of 10, including feedback notch filter)

o    Visually display room layout on a laptop or iPad

o    ​Edit, save, recall, and share speaker-setup parameters

·         Comfortable, ergonomic handles

·         Integrated pole insert and interlocking stacking provisions

·         Optional mountable Sub Dolly and pull-tested Sub Pole to mount a full-range system atop the 18sAI


Acoustic Performance



Powered subwoofer, ported

Frequency Response (-10 dB)

29 Hz to 141 Hz

Frequency Response (-6 dB)

32 Hz to 110 Hz

Maximum Peak SPL

135 dB



LF Transducer

18" Ferrite

Voice Coil Diameter





Class D

Total Power Output

1,000W (total power without protection algorithms and limiter enabled)

LF Power

2 x 500W bridged

Rated THD

<0.05% (20 Hz - 20 kHz)

Dynamic Range

119 dB (A-weighted)


20 Hz - 20 kHz


Free air convection



Amplifier Protection

Over-current, DC, over/under-voltage, over-temperature, high frequency

Transducer Protection

4-ch. multi-threat limiter



AC Power Input

100-230V~, 50-60 Hz

AC Power Consumption (1/8 Power)


Frequency Response (-10 dB)

29 Hz to 141 Hz



Contour Presets

Normal, Extended LF


Normal or Reverse

Delay Presets

0m, 1m, 2m

Bit Depth


Sample Rate

96 kHz




Eucalyptus Plywood


Chemline™ polyurethane


Powder-coated steel

Dimensions (HxDxW)

23" x 24" x26"

(584.2 x 609.6 x 669.4 mm)

Unit Weight

94 lbs (42.64 kg)


One on each side

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) - throughput


Speaker level (Variable: -12 dB to +12 dB), mono sum


DSP Preset, Delay Preset, Polarity Invert, Network Connected, Network Activity, Wi-Fi Setup, Wi-Fi On, Signal, Limit, Clip, Thermal

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