QSC LS118 18-inch Direct Radiating Powered Subwoofer

Made to meet the needs of solo performers to professional audio installers, the LS118 from QSC is an 18-inch direct radiating powered subwoofer compatible with the rest of QSC’s L-Class line of products.

This sub boasts very high output(138 dB peak SPL) combined with an impressive low-frequency performance and also features an 18-inch (460 mm) long excursion direct radiating driver and selectable DEEP™ mode for further LF extension.

QSC LS118 Features

• Very high output (136 dB peak SPL) with impressive low frequency performance
• Purpose-designed, 18-inch (460 mm) long excursion direct radiating driver
• Energy-efficient, 4000 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

• LS118 18-in Direct Radiating Powered Subwoofer1
• Heavy-duty, low noise 4-inch casters4
• PowerCON TRUE1 power cable1

• 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 SPL1 (peak)136 dB @ 1 m
• Amplifier (peak) Class D, 3600 W
• CoolingLow noise, variable speed fan
• Controls
  • Rotary push encoder
  • 2 x Push button (Menu, ID)
• Display Screen61 mm (2.4-inch) Full color display area (240 x 320 pixels)
• Indicators
  • Power LED
  • Limiter active LED
  • Standby active LED
  • 2 x Signal LED
• Connectors
  • XLR 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 Consumption[2] 100 VAC, 3.6 A / 120 VAC, 3.0 A / 230 VAC, 1.7 A
• Enclosure Material15 mm birch plywood with Polyurea coating
• Attachment Points
  • 8 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
• Dimensions (HxWxD)25.2×20.5×31.1" (640×520×790mm)
• Net Weight50 kg (110 lbs) including casters
• Shipping Weight62.6 kg (138 lbs)
• RegulatoryUL, CE, FCC Class B a
• Notes
  • (1) Measured at 1 meter, on-axis, in half-space using Pink Noise, Crest Factor 10 dB unweighted.
  • (2) 1/8 power is representative of current draw with typical music program material with occasional clipping.
  • Dante is a registered trademark of Audinate Pty Ltd. EtherCON and PowerCON are registered trademarks of Neutrik.
  • Windows is a registered trademark of Microsoft. MacOS and iOS are registered trademarks of Apple.
  • Specifications subject to change without prior notice.

More about the LS118

Used in cooperation 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. Its rugged wooden enclosure is coated with a Polyurea finish for enhanced durability and longevity.

Four low-noise, heavy-duty casters allow you to roll the sub into position—great for achieving the perfect setup without straining your back!

The LS118 can also be configured in groups of two or more units to form a cardioid configuration, optimizing your audio’s low-frequency output in front while minimizing unwanted energy around the sides and rear of the system. Daisy-chain connectivity allows for analog or networked digital audio (Dante®), as well as AC power (PowerCON TRUE1).

More about QSC's L-Class Powered Line Array Loudspeakers

Advanced, intelligent, and active, these speakers are designed specifically to meet the needs of a wide range of applications: from simple to complex, portable to installed, plug-and-play to networked, small indie setups to high-tech AV production systems.

No matter what your project or application, L-Class offers solutions that will make your audio sound its best…all in a build that’s easy to configure and integrate into your space.