Description
High Performance Audio – The QSC LA118 L Class 18-Inch Active Line Array Subwoofer
The LS118 is a next-generation, intelligent, active subwoofer featuring a brilliant combination of leading-edge innovation, refined engineering, and unparalleled ease of use in an easy-to-deploy package.
More Information
- Very high SPL output (136 dB peak) 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 frames and stack adapters or loudspeaker poles
- Complemented by LA108 and LA112 active line array loudspeakers
Technical Specification
- Configuration: Direct radiating, active subwoofer
- LF Transducer: 460 mm (18-inch), cone
- Frequency Response (-6 dB): 41 Hz – 98 Hz
- Frequency Range (-10 dB): 35 Hz – 111 Hz
- Nominal Coverage Angle: Omni-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
- Cooling: Low noise, variable speed fan
- Controls: Rotary push encoder, 2 x Push button (Menu, ID)
- Display Screen: 61 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 Input Universal power supply, 100-240 VAC, 50-60 Hz: AC Power Consumption, 100 VAC, 3.6 A / 120 VAC, 3.0 A / 230 VAC, 1.7 A, Enclosure Material 15 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
- Color: Black (RAL 9011), Grille 16 GA Powder-coated steel
- Dimensions: 640 × 520 × 790 mm (25.2 × 20.5 × 31.1 inches)
- Net Weight: 50 kg (110 lbs) including casters








