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QSC LS218 5000W Next-Generation Intelligent Active Dual 18" Subwoofer (Black)

BH #QSLS218 • MFR #LS218
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QSC LS218 5000W Next-Generation Intelligent Active Dual 18" Subwoofer (Black)
Key Features
  • For Plug-and-Play High-Tech AV Installs
  • Two 18" Woofers
  • 5000W Class-D Amplifier Module
  • Impressive 141 dB Peak SPL
Featuring a combination of leading-edge innovation, refined engineering, and unparalleled ease of use in an easy-to-deploy package, the QSC LS218 is a next-generation, intelligent, active subwoofer that's designed to complement the LA 108 and LA 112 line-array loudspeakers. The subwoofer is well suited for live venues, fixed installations, mobile entertainers, AV rental, and event production.
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Expected availability: Summer 2026
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QSC LS218 Overview

Featuring a combination of leading-edge innovation, refined engineering, and unparalleled ease of use in an easy-to-deploy package, the QSC LS218 is a next-generation, intelligent, active subwoofer that's designed to complement the LA 108 and LA 112 line-array loudspeakers. The subwoofer is well suited for live venues, fixed installations, mobile entertainers, AV rental, and event production.

The LS218 features a QSC Acoustic Linear Phase (ALP) design, which permits the effortless combination and coherent deployment of QSC loudspeakers within the same sound system. The subwoofer also provides daisy-chain connections for analog, networked digital audio (Dante and Q-Sys), and AC power (PowerCON TRUE1). Two or more LS218 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. The LS218 a powerCON TRUE 1 power cord.

Benefits
  • Very-high SPL output (141 dB peak) with impressive low-frequency performance.
  • Two 18" long-excursion, direct radiating driver.
  • Energy-efficient, 5000W 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.
  • Omnidirectional 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.
  • 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.

QSC LS218 Specs

Key Specs
Frequency Range/Response
35 Hz to 111 Hz (-10 dB)
41 Hz to 98 Hz (-6 dB)
Speaker Type
Active Line Array Subwoofer
Enclosure Type
Bass-Reflex
Total Output Power
5000 W
Amplifier Class
Class-D
Drivers
LF Driver
2x 18" / 45.7 cm Woofer
Performance
Frequency Range/Response
35 Hz to 111 Hz (-10 dB)
41 Hz to 98 Hz (-6 dB)
Maximum SPL
141 dB (Peak)
Signal Processing
EQ & Filters
No
Dynamic Processing
Limiter
Alignment Delay
No
Digital Signal Processing
No
Connectivity
Audio I/O
1x XLR 3-Pin Line Input
1x XLR 3-Pin Line Thru
Network I/O
2x RJ45 (Dante)
USB I/O
No
Wireless
No
Mobile App Compatible
Yes: iPadOS Only
App Name: QSC SysNav
Power
AC Input Power
100 to 240 VAC, 50 / 60 Hz
AC Power I/O
1x powerCON Input
1x powerCON Output
Physical
Color
Black
Mounting
Stand Mount
2 x M20-Threaded Pole Socket (Side, Top)
Suspension Points
6 x M10 Fly Point (Side, Top)
Handles
2x Each Side
Construction Material
Metal Grille, Plywood
Environmental Resistance
No
Dimensions
40.3 x 27.4 x 25.1" / 102.4 x 69.6 x 63.8 cm
Weight
184 lb / 83.5 kg

QSC LS218 Reviews

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