

QSC LS118 Powered 18 inch Subwoofer
Active Subwoofer
FREE UK Delivery
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Want to Click and Collect or try items at our Guildford Store?
The store is open 10am - 6pm Monday to Saturday and 11am - 5pm Sunday and bank holidays.
The stock information shows the quantity of units that are available to purchase at the Guildford store and the quantity of units that are available at our off-site Guildford warehouse. These stock levels are updated in real time.
Our Click and Collect service is available at our Guildford store from 10am - 6pm Monday to Saturday, and 11am - 5pm on Sunday. You can either choose click and collect as your delivery option online or, during store opening hours, call our sales team at 01483 456777 to place a 10% deposit.
If you have placed your order online, you will receive a confirmation email of your order and a separate follow-up text or email to confirm when your item is ready for collection.
Please do not come to the store before you have received the follow-up message, as your order may not yet be ready at the store.
If the only available stock is in our off-site warehouse it can be brought to the store location for you to try - you just need to contact the store within opening hours. Please note any requests received after 3.30pm will not arrive at the store until the following morning.
Please be aware that, unless you have paid a deposit to reserve the item, it will continue to be free, both online and in-store, for another customer to buy. Therefore we would advise you to place a 10% deposit by either using the on-line click and collect service or calling us 01483 456777.
SKU: LS118-UK
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Product Description
The QSC LS118 is a premium, high-performance active subwoofer delivering exceptional low-frequency output (138 dB peak SPL) with outstanding clarity. Featuring Acoustic Linear Phase (ALP) technology, 4000 W Class D amplification, and flexible deployment options, the LS118 is perfect for portable setups, AV productions, and fixed installations. With Dante integration, cardioid capabilities, and rugged construction, it ensures reliability and versatility for any professional audio application.
Key Features:
- High-Output Performance:
138 dB peak SPL, 18-inch long excursion driver, and selectable DEEP mode for extended low-frequency response. - Advanced Connectivity & Control:
Includes Dante, QSC SysNav App compatibility, and seamless Q-SYS integration for complete system management. - Flexible Deployment Options:
Vertical or horizontal mounting with M20 pole receivers, array frame/ground-stack adapters, and cardioid configurations.
Specifications:
- Configuration: Direct radiating, active subwoofer
- LF Transducer: 18-inch cone (460 mm)
- Frequency Response (-6 dB): 41 Hz - 98 Hz
- Maximum SPL (Peak): 138 dB @ 1 m
- Amplifier Power: 4000 W Class D with Power Factor Correction
- Cooling: Low-noise, variable-speed fan
- Connectors: XLR (In/Thru), 2x RJ45 EtherCON (Dante), PowerCON TRUE1 (AC In/Out)
- Power Input: 100–240 VAC, 50–60 Hz
- Enclosure: 15 mm birch plywood with Polyurea coating
- Mounting: 8x M10 points, 2x M20 pole mounts
- Dimensions: 640 × 520 × 790 mm (H × W × D)
- Net Weight: 50 kg (110 lb), including casters
- Included Accessories: 4 heavy-duty casters, PowerCON TRUE1 power cable