Tight, clean, natural bass.

Designed to complement full-range systems, without overshadowing them, the StudioLive 18sAI active subwoofer naturally extends the reach of your full-range systems’ low end to deliver studio monitor accuracy throughout its range. Driven by 1,000W RMS of Class D amplification, the 18sAI’s 18-inch ferrite speaker delivers exceptional low-end performance down to 35 Hz. The net result is a musical approach to sub-bass frequency reproduction that affords a natural listening experience on a large scale.

A four-way PA that works as one.

Although the StudioLive 18sAI is flexible enough to work great with other powered loudspeakers, when used with a StudioLive 312AI, 315AI, or 328AI, the StudioLive 18sAI forms a true four-way system. For applications that require a more linear (“flat”) frequency response between the subwoofer and full-range speaker, engage the highpass filter on the full-range StudioLive AI-series loudspeaker to readjust the phase and time-alignment, keeping the full-range system in phase with the 18sAI subwoofer. Need a little more bump? Leave the highpass filter off and enjoy the perfectly phase- and time-aligned overlap at 100 Hz between your full-range system and your subwoofer.​

Networkable with Wi-Fi, Ethernet, or Dante.

The StudioLive 18sAI comes equipped for wireless and wired communications over an Ethernet or Wi-Fi local area network for monitoring and control over custom tuning settings. Better yet, add the SL-Dante-SPK option card to create a Dante™ network and ditch your analog cables in favor of lightweight CAT5e or CAT6 cables.

You’re in control—here, there, and everywhere.

The StudioLive 18sAI subwoofer features a robust onboard loudspeaker processor that can be accessed and controlled over a standard LAN network. PreSonus’^® SL Room Control software makes customizing your speaker system as simple as connecting an Ethernet cable to a wireless router. Creating a cardioid subwoofer array is as easy a pressing two buttons, thanks to onboard polarity reverse and three alignment-delay presets.

Clear, accurate, powerful—and available now.

Whether out on tour or installed in a venue, the StudioLive 18sAI subwoofer mates perfectly with StudioLive AI full-range loudspeakers to deliver studio-monitor accuracy at incredibly high SPLs. With extensive software control and wired and wireless networking, it offers advance capabilities that go well beyond conventional point-source loudspeakers, yet it’s easy to set up and use. Check out the StudioLive 18sAI at your favorite PreSonus dealer.

Features

Main Components

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

Controls and Networking

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
Network Setup Wizard automatically detects each speaker and allows you to quickly connect to your wireless router network
Remote control over Maximum SPL/output level, high-pass filter, onboard operational modes, performance monitoring, mute, and speaker delay
31-band graphic EQ and 8-band parametric EQ (total of 10, including feedback notch filter)
Visually display room layout on a laptop or iPad
​Edit, save, recall, and share speaker-setup parameters

Convenience Features

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