Studio sound. Live performance.

StudioLive® 18sAI: Active Integration Subwoofer

PreSonus StudioLive 18sAI


The 18-inch Sub that Really Takes Advantage of DSP

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.


Not Just Powerful… Extremely Smart

Although the StudioLive 18sAI works great with other powered loudspeakers, when used with a StudioLive 312AI, 315AI, or 328AI, it 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 AI-series loudspeaker to readjust the phase and time-alignment, keeping the full-range system in phase with the 18sAI subwoofer. Or leave the highpass filter off and enjoy perfectly phase- and time-aligned overlap at 100 Hz between full-range system and 18sAI.

Take advantage of 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. For complete details and specifications, visit


Key features:

  • 18-inch ferrite transducer with 4-inch voice coil
  • 1,000 watts Class D amplification
  • 32-bit floating point DSP with alignment delay
  • Switchable stereo/summed-mono XLR line outputs
  • Wired or wireless networking with free SL Room Control software features Network Setup Wizard, remote control over output level, HP filter, operational modes, performance modes, mute, speaker delay, 31-band GEQ, and 8-band PEQ
  • Optional Dante™ card
  • Pole insert and ergonomic handles

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