Overview:
The QSC LS218 is a next-generation intelligent active dual 18-inch subwoofer designed for live venues, touring productions, AV rental, fixed installations, and large-scale sound reinforcement applications. Featuring two long-excursion 18-inch drivers and a 5000W peak Class-D amplifier, the LS218 delivers exceptional low-frequency output with a peak SPL of 141 dB. The system incorporates QSC Acoustic Linear Phase (ALP) technology, Dante networking, Q-SYS integration, SysNav remote management, and selectable omnidirectional or cardioid deployment modes.
Features:
Dual 18-inch long-excursion woofers
5000W peak Class-D amplification
141 dB peak SPL output
QSC Acoustic Linear Phase (ALP) technology
Dante networking support
Q-SYS ecosystem integration
SysNav system design and monitoring app
Selectable omnidirectional and cardioid modes
PowerCON TRUE1 power daisy-chaining
Designed for LA108 and LA112 line array systems
Deep mode for enhanced low-frequency extension
Tour-ready enclosure construction
Specs:
| Product Type | Powered Dual 18-Inch Active Subwoofer |
| LF Drivers | 2 x 18 in Long-Excursion Direct-Radiating Drivers |
| Amplifier Type | Class-D with Power Factor Correction |
| Amplifier Power | 5000W Peak |
| Maximum SPL | 141 dB Peak |
| Frequency Response (-6 dB) | 35 Hz - 93 Hz |
| Frequency Range (-10 dB) | 31 Hz - 103 Hz |
| Radiation Modes | Omnidirectional or Cardioid |
| DSP | QSC Acoustic Linear Phase (ALP) |
| Networking | Dante®, Q-SYS, SysNav App Control |
| Audio Inputs | Analog Audio and Dante Digital Audio |
| Power Connections | PowerCON TRUE1 In/Out |
| Enclosure | Premium Birch Plywood with Polyurea Finish |
| Color | Black |
| Dimensions | 43.0 x 28.0 x 31.5 in |
| Volume | 37,926.0 in³ |
| Weight | 190.0 lb |
| Shipping Weight | 216.0 lb |