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.