Presonus Active Integration Subwoofer

Presonus Active Integration Subwoofer You can get pretty darned low—down to 35 Hz (-6 dB) Better yet, the 18sAI’s 18-inch ferrite speaker delivers those lows with an accuracy usually found only in studio monitors—except a whole lot louder (up to 135 dB SPL), thanks to a 1,000 watt (bridged), Class D power amplifier.

It adds up to punchy, round-sounding lows that make kick drums, basses, and other basement-dwelling sounds come alive When used with a StudioLive 312AI, 315AI, or 328AI, the StudioLive 18sAI forms a true four-way system.

But the StudioLive 18sAI is flexible enough to work great with other powered loudspeakers, too! With most 4-way systems, leaving frequency content below 100 Hz in the full-range loudspeaker can introduce cancellation and reinforcement with the highest frequencies that are reproduced by the subwoofer StudioLive AI-series loudspeakers avoid this problem when combined with an 18sAI subwoofer.

For applications where a frequency overlap at 100 Hz is beneficial, you can achieve bigger bass sound without any extra effort For applications that require a more linear (“flat”) frequency response between the subwoofer and full-range speaker, simply engage the highpass filter on the full-range StudioLive AI-series loudspeaker.

This will also readjust the phase and time-alignment to keep the full-range system in phase with the 18sAI subwoofer, enabling you to create the best four-way system for your application With most 4-way systems, leaving frequency content below 100 Hz in the full-range loudspeaker can introduce cancellation and reinforcement with the highest frequencies that are reproduced by the subwoofer.

StudioLive AI-series loudspeakers avoid this problem when combined with an 18sAI subwoofer For applications where a frequency overlap at 100 Hz is beneficial, you can achieve bigger bass sound without any extra effort.

For applications that require a more linear (“flat”) frequency response between the subwoofer and full-range speaker, simply engage the highpass filter on the full-range StudioLive AI-series loudspeaker This will also readjust the phase and time-alignment to keep the full-range system in phase with the 18sAI subwoofer, enabling you to create the best four-way system for your application.

18" Active Sub w/ AI Technology • 18" Ferrite Subwoofer • Active Integration with Temporal EQ • 96kHz/32-bit Floating-Point DSP • 1,000W of Class D Amplification • Balanced XLR/TRS Stereo Line Inputs • Balanced XLR Stereo Line Throughputs • Wired or Wireless Control via Software • Polarity Invert • Integrated Top-Mount Pole Insert • Plywood Construction 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 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 Made in China.