Skip to product information
1 of 1



The GP118-sw 18" Portable Subwoofer from QSC is a high performance, direct radiating 18" subwoofer with a black tour grade finish. It is designed for use in portable and installed sound applications. The GP118-sw is an ideal companion to QSC's WideLine Series, ILA Series, AcousticPerformance Series and AcousticDesign Series loudspeakers. The GP118-sw features an 18" transducer that incorporates a double layer spider and triple roll surround for extended and controlled excursion at extreme power. The 4" voice coil is wound on a fiberglass former to prevent deformation at high operating temperatures and is vented to reduce power compression. An aluminum demodulating ring is employed to reduce distortion.

More Information

  • Premium-grade, long excursion, high power 18-inch transducer with 4-inch voicecoil, dual layer spider and triple-roll surrounds
  • Interlocking feet and recess features allow for rigid vertical stacking
  • Built-in handles for ease of transport
  • Threaded pole cup for deploying a full-range loudspeaker on top
  • M10 fittings allows for suspension in permanent and portable applications
  • Dual NL4 Speakon connectors
  • 18mm Baltic birch plywood construction
  • 16-gauge powder coated steel grilles
  • Finish available in black (GP118-sw-BK) or white (GP118-sw-WH).
  • Complete EASE, CAD & BIM information available online
  • Cinema-version available for surround LFE

Technical Specification

Frequency Response (-10 dB): 29 Hz–800 Hz

Power Capacity: 1850 W (82.5 V) continuous 1700 W peak

Nominal Sensitivity: 298 dB, 2.83 V @ 1 m

Maximum Rated SPL: 129 dB @ 1 m, continuous3 135 dB @ 1 m, peak4

Nominal Impedance: 8Ω

Transducer: 457 mm (18-inch) driver with 102 mm (4-inch) voice coil

Recommended Power: 1700 W

Enclosure Details

Input Connector: Dual NL4 connector

Pinout1: +/1- Sub 2+/2- N/C

Enclosure Material: 18 mm Baltic birch plywood

Finish: Black (GP118-sw-BK) or white (GP118-sw-WT) texture coat

Attachment Points: 16 threaded M10 inserts

Grille: 16-gauge powder coated steel

Dimensions (HWD) inches: 20.9 x 25.8 x 30.4

Dimensions (HWD) mm: 531 x 656 x 772

Net Weight: 111 lb / 50.3 kg

Shipping Weight: 121 lb / 54.9 kg

View full details