18-inch Subwoofer

Hero view of a WL118-sw

Array of new Q-SYS PL Series speakers including line array, subs, and loudspeakers

This product has been discontinued. Please check with your Q-SYS regional sales representative for remaining stock availability. 

Consider the PL Series performance loudspeakers as a replacement:

  • PL-LA: passive installation line arrays designed to deliver premium sound, ideally for small to medium sized venues
  • PL-SUB: passive installation subwoofers that feature a weatherized wooden enclosure in a compact form factor suited for a broad range of applications


  • Single 18-inch subwoofer in a bass-reflex enclosure
  • 850 watt continuous power capacity
  • Frequency range down to 29 Hz
  • May be suspended at the top, or behind the WL2082-i array
  • Available in black or white to harmonize with venue décor
Configuration Vented box
High Frequency

Low Frequency


850 W, 8Ω 18-inch woofer with a 4-inch voice coil, ceramic magnet assembly
Frequency Response (±3 dB) 32 Hz - 200 Hz
Frequency Range (-10 dB) 29 Hz - 800 Hz
Nominal Impedance
LF: 8Ω
Sensitivity 98 dB
(2.83 V @ 1 m)
Continuous Power Capacity 1

LF: 850 W
Recommended Power

LF: 1750 W
Maximum Output (dB SPL at 1 m)
Continuous / Peak

LF: 128.5 dB / 134.5 dB
Nominal Coverage  
Cabinet Type Vented subwoofer
Enclosure Material 18 mm Baltic Birch Plywood
Finish Available in black (WL118-sw BLK) or white (WL118-sw WHT) paintable
Grille 16 gauge powder-coated steel with cloth backing
Connectors 2 x NL8 in parallel / 2 x NL4 in parallel
Pin Outs NL8
1+/1- Sub
2+/2- Pass thru
3+/3- Pass thru
4+/4- Pass thru

1+/1- Sub
2+/2- Pass thru
Attachment Points Integral, non-adjustable (straight array only)
Dimensions (HWD) inches 22.1 x 27.6 x 30.3
Dimensions (HWD) mm 562 x 702 x 771
Weight 111 lb / 50.4 kg net
121 lb / 55 kg shipping
Accessories Available FB2082-i: Fly-bar for WL2082-i, WL118-sw and WL115-sw. Available in black or white.

EB2082-i: Extension bar, allows WL118-sw or WL115-sw to be suspended behind WL2082-i. Available in black or white.

PB2082-i: Pullback bar for WL2082-i. Pulls the bottom of the array back to achieve the desired angle. Available in black or white.

AB2082-i: Angle bracket, allows greater vertical splay between WL2082-i and WL118-sw or WL115-sw enclosures in ground stacked configurations. Available in black. Requires two brackets per array, sold individually.

QRP-KIT-1: Kit of four quick-release pins for use in lieu of included bolts.

All specifications are subject to change without notice.