Active Dual 18in Subwoofer
QSC LS218 is an intelligent active subwoofer built for high-output low-frequency reinforcement in modern AV, live sound, rental, and installed audio systems. With dual 18-inch woofers, a 5000W Class-D amplifier module, Dante networking, and QSC SysNav control, it is designed to pair cleanly with QSC LA108 and LA112 active line array loudspeakers.
QSC LS218 Competitive Differences
- Dual 18-inch long-excursion, direct-radiating woofers for powerful sub-bass output
- 141 dB peak SPL with a 5000W peak Class-D amplifier module
- Acoustic Linear Phase design supports coherent deployment with compatible QSC loudspeakers
- Dante digital audio networking and QSC SysNav app control for modern system integration
- Omnidirectional or cardioid radiation modes, with cardioid operation requiring at least two units
- Rugged birch plywood enclosure with polyurea coating for touring and installation durability
QSC LS218 Description
The QSC LS218 is a next-generation active line array subwoofer designed to extend the low-frequency performance of QSC LA108 and LA112 systems. It is well suited for live venues, fixed installations, mobile entertainers, AV rental companies, and event production teams that need powerful bass output with streamlined deployment.
Its dual 18-inch woofer design is powered by an energy-efficient 5000W peak Class-D amplifier module with Power Factor Correction. With up to 141 dB peak SPL and a frequency range down to 35 Hz, the LS218 delivers strong low-end impact for music playback, live performance, and high-output sound reinforcement.
QSC Acoustic Linear Phase design helps maintain coherent performance when combining compatible QSC loudspeakers in the same system. The LS218 also supports analog audio, Dante networked digital audio, QSC SysNav control, and powerCON TRUE1 AC power connectivity for flexible system design.
For deployment flexibility, the QSC LS218 can be used vertically or horizontally and includes M20 threaded pole sockets, M10 fly points, and multiple handles. Its plywood enclosure, metal grille, and polyurea coating provide the durability needed for demanding production and installation environments.
LS218 Features
- Active dual 18-inch line array subwoofer
- 5000W peak Class-D amplifier module
- 141 dB peak maximum SPL
- 35 Hz to 111 Hz frequency range at -10 dB
- 41 Hz to 98 Hz frequency response at -6 dB
- Acoustic Linear Phase design for coherent system deployment
- Designed to complement QSC LA108 and LA112 active line array loudspeakers
- Omnidirectional or cardioid radiation modes
- Cardioid configuration requires at least two LS218 subwoofers
- Selectable DEEP mode for extended low-frequency performance
- QSC SysNav app support for system design, configuration, control, and monitoring
- Dante digital audio networking via dual RJ45 ports
- XLR input and thru connections for analog audio daisy-chaining
- powerCON TRUE1 input and output connections for AC power daisy-chaining
- Birch plywood enclosure with polyurea finish
- Metal grille for driver protection
- Vertical or horizontal deployment options
- Two M20 threaded pole sockets
- Six M10 fly points
- Side handles for transport and positioning
LS218 Specifications
- Speaker Type: Active line array subwoofer
- Enclosure Type: Bass-reflex
- LF Driver: 2 x 18 in woofers
- Total Output Power: 5000W peak
- Amplifier Class: Class-D
- Maximum SPL: 141 dB peak
- Frequency Range: 35 Hz to 111 Hz (-10 dB)
- Frequency Response: 41 Hz to 98 Hz (-6 dB)
- Dynamic Processing: Limiter
- Audio I/O: 1 x XLR 3-pin line input, 1 x XLR 3-pin line thru
- Network I/O: 2 x RJ45 for Dante networking
- Mobile App Compatible: Yes, iPadOS only
- App Name: QSC SysNav
- AC Input Power: 100 to 240 VAC, 50/60 Hz
- AC Power I/O: 1 x powerCON input, 1 x powerCON output
- Mounting: Stand mount, 2 x M20 threaded pole sockets
- Suspension Points: 6 x M10 fly points
- Handles: 2 on each side
- Construction Material: Metal grille, plywood
- Color: Black
- Dimensions: 40.3 x 27.4 x 25.1 in (102.4 x 69.6 x 63.8 cm)
- Weight: 184 lb (83.5 kg)
What's In The Box
- QSC LS218 active subwoofer
- powerCON TRUE1 power cord
QSC LS218
(QSC LS-218)
