Delivering extraordinary audio experiences and exceptional performance via system intelligence and premium components, the LS118 is the

result of a deep understanding of customer needs and application requirements. The LS118 is easy to configure and deploy for applications

ranging from simple, portable, plug-and-play setups, to demanding, networked, high-tech AV productions and fixed installations.

Featuring QSC Acoustic Linear Phase (ALP) design, which permits effortless combination and coherent deployment of QSC loudspeakers within

the same sound system, the LS118 also provides daisy-chain connections for analog, networked digital audio (Dante®) and AC power

(PowerCON TRUE1). Two or more LS118 can be configured in a cardioid arrangement, maximizing low frequency output in front while

minimizing unwanted energy around the sides and rear of the system.

Together with the LA108 or LA112 active line array loudspeakers, the LS118 can be deployed with either an array frame/ground-stack adapter

or using loudspeaker poles in both horizontal and vertical orientations.


  • Very high output (138 dB peak SPL) with impressive low frequency performance
  • Purpose-designed, 18-inch (460 mm) long excursion direct radiating driver
  • Energy-efficient, 3600 W peak power Class D amplifier module with Power Factor Correction and extremely low AC consumption
  • Acoustic Linear Phase (ALP) design provides complementary coherence between QSC loudspeakers deployed in the same audio system delivering a uniform listening experience across the entire venue.
  • QSC SysNav™ (System Navigator) App allows the user to easily design, configure, control, monitor and apply signal processing to individual subwoofers, full arrays or groupings of both.
  • Network solution includes digital audio-over-IP (Dante®) for interoperability with other audio equipment and seamless control and monitoring integration into the Q-SYS Ecosystem via Q-SYS Inventory Extensions
  • Omni-directional or cardioid radiation modes (cardioid setup requires min. 2 units)
  • Selectable DEEP™ mode for extremely low frequency extension
  • Rugged wooden enclosure with Polyurea coating for lasting durability
  • Four low-noise, heavy-duty casters
  • Vertical or horizontal deployments (M20 threaded pole receivers) combined with array frame/ground-stack adapters or loudspeaker poles.
  • Complemented by LA108 and LA112 active line array loudspeakers
  • Industry-best global 6-Year Extended Warranty with product registration.

Please see manufacturer’s product page for more information HERE.

ConfigurationDirect radiating, active subwoofer
LF Transducer460 mm (18-inch), cone
Frequency Response (-6 dB)41 Hz – 98 Hz
Frequency Range (-10 dB)35 Hz – 111 Hz
Nominal Coverage AngleOmni-directional or cardioid radiation modes (cardioid setup requires min. 2 units)
Maximum Rated SPL(peak)136 dB @1 m
Amplifier (peak)Class D, 3600 W
CoolingLow noise, variable speed fan
ControlsRotary push encoder
2 x Push buttons (Menu, ID)
Display Screen61 mm (2.4-inch) Full color display area (240 x 320 pixels)
IndicatorsPower LED
Limiter active LED
Standby active LED
2 x Signal LED
ConnectorsXLR Female (Analog In)
XLR Male (Analog Thru)
2 x RJ45 EtherCON (Dante® and QSC SysNav™ In/Thru)
2 x PowerCON TRUE1 (AC Power Inlet/Outlet)
AC Power InputUniversal power supply 100–240 VAC, 50–60 Hz
AC Power Consumption2100 VAC, 3.6 A / 120 VAC, 3.0 A / 230 VAC, 1.7 A
Enclosure Material15 mm birch plywood with Polyurea coating
Attachment Points8 x M10 (for individual vertical or horizontal suspension/flying)
2 x M20 (for vertical or horizontal loudspeaker pole or ground-stack deployments)
ColorBlack (RAL 9011)
Grille16 GA Powder coated steel
Net Weight50 kg / 110 lb (including casters)
RegulatoryUL, CE, FCC Class B