18-inch Subwoofer


  • 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
Specifications GP-118sw
Frequency Response (-10 dB) 29 Hz–800 Hz
Power Capacity1 850 W (82.5 V) continuous 1700 W peak
Nominal Sensitivity2 98 dB, 2.83 V @ 1 m
Maximum Rated SPL 129 dB @ 1 m, continuous3 135 dB @ 1 m, peak4
Nominal Impedance
Transducer 457 mm (18-inch) driver with 102 mm (4-inch) voice coil
Recommended Power 1700 W / 6800 W / 82 V
Enclosure Details
Input Connector Dual NL4 connector
Pinout 1+/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 50.3 kg (111 lb)
Shipping Weight 54.9 kg (121 lb)

Specifications are subject to change without notice.