QSC LS218 - Dual 18" 5000W Powered Subwoofer
- For Plug-and-Play High-Tech AV Installs
- Two 18" Woofers
- 5000W Class-D Amplifier Module
- Impressive 141 dB Peak SPL
- Omni or Cardioid (with 2 Units)
- XLR and powerCON I/O Connectors
- 2 x RJ45 (Dante & QSC SysNav In/Thru)
- Birch Enclosure with Polyurea Finish
- Includes powerCON Power Cord
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The QSC LS218 Powered Subwoofer is a high-output dual 18-inch active subwoofer engineered for large-scale professional sound reinforcement. Designed to deliver deep, powerful, and controlled low-frequency performance, the LS218 is ideal for concerts, touring systems, festivals, houses of worship, and high-demand live sound applications.
Powered by a robust Class D amplification system, the LS218 produces massive low-end impact with exceptional efficiency and reliability. Its dual high-excursion 18-inch drivers deliver tight, authoritative bass while maintaining clarity and definition at high SPL levels. Advanced onboard DSP processing ensures optimal tuning, thermal protection, and consistent performance across a wide range of operating conditions.
Built with tour-grade construction and designed to integrate seamlessly with QSC full-range loudspeakers, the QSC LS218 provides professional-grade low-frequency reinforcement for sound systems that demand power, precision, and durability.
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Features
- Very high SPL output (141 dB peak) with impressive low frequency performance
- Two 18-inch (460 mm) long excursion direct radiating driver
- Energy-efficient, 5000 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
- 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
- 6 Year Warranty when registered within 30 days of purchase
- Available Mid-2026
SpecificationsÂ
| Model | LS218 |
|---|---|
| Configuration | Direct radiating, active subwoofer |
| LF Transducer | (2x) 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 SPL1Â (peak) | 141Â dB @1 m (peak) |
| Amplifier (peak) | Class D, 5000 W |
| Cooling | Low noise, variable speed fan |
| Controls | Rotary push encoder 2 x Push buttons (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 Consumption2 | 100 VAC, X AÂ / 120 VAC, XÂ A / 230 VAC, XÂ A |
| Enclosure Material | 15 mm birch plywood with Polyurea coating |
| Color | Black (RAL 9011) |
| Grille | 16 GA Powder coated steel |
| Dimensions (H × W × D) (Without Casters) |
638 × 1023 × 696 mm 25.1 × 40.3 × 27.4 inches |
| Carton Dimensions (H×W×D) | 1200 × 800 × 724 mm 47.2 × 31.5 × 28.5 inches |
| Net Weight | 83.5 kg (184 lb) |
| Shipping Weight | 96.6 kg (213Â lb) |
| Included Accessories | 1 x PowerCON TRUE1 power cable |
| Optional Accessories | CASTER KIT-L, SP-16X, SP-26, SP-36, COVER 1 (TBD), COVER 2 (TBD), Caster Cart (TBD), M10 KIT-W, LS-KIT-J |
| Battery Chemistry | Lithium manganese dioxide |
| Regulatory | CE, WEEE, UL, China RoHS, RoHS II, FCC Class B |
| Condition | New |
|---|---|
| MPN (manufacturer part number) | LS218 |
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