QSC GP218-SW Dual 18" Indoor Portable Subwoofer 1700W RMS, Black

When deep, controlled bass is mission-critical, the QSC GP218-SW Dual 18" Indoor Portable Subwoofer delivers the impact and fidelity pro engineers demand. This QSC pro subwoofer combines dual 18-inch premium drivers and 1700W RMS power to produce tight, extended lows and up to 140 dB peak SPL, so foundations remain clear and punchy even in large indoor venues. Built for both portable and installed sound, the GP218-SW’s vented Baltic birch enclosure and reinforced transducers minimize distortion and power compression so system tuning stays predictable from show to show.

For AV integrators and rental houses, the GP218-SW integrates seamlessly with wideline and installed loudspeaker arrays, and its transport-focused design (handles, dolly options, stacking feet) speeds deployment. Beyond music and live events, its consistent low-frequency reproduction also supports audio monitoring in security and surveillance suites where accurate low-end cues matter. Choose the QSC GP218-SW when you need dependable, professional bass performance — ideal for clubs, worship, sports venues, themed entertainment and critical AV/security monitoring. Request a demo or add to your system spec today.

• Deliver powerful, accurate low end that tightens mixes and reinforces vocals and effects — ideal for live sound, houses of worship, and themed entertainment.
• High-impact output with 1700W RMS and dual 18-inch drivers for reliable punch and low-frequency extension that fills large indoor venues.
• Rugged, road-ready construction (18mm Baltic birch, waterborne finish, steel grille) reduces downtime and lowers total cost of ownership for rental and install fleets.
• Designed for easy transport and deployment: built-in handles, optional dolly/soft cover, and interlocking stacking feet speed setup and teardown.
• Smooth, low-distortion performance and 101.5 dB sensitivity maintain clarity at high SPL — perfect for AV systems, stadium monitoring, and security/surveillance audio applications.