Description
With the introduction of the QSC LS218, QSC takes a new step within the professional L Class series. This impressive active subwoofer is developed for applications where deep bass, high sound pressure, control and system integration are central.
The LS218 features no less than two 18-inch (460 mm) long-excursion direct-radiating woofers. This subwoofer is designed to deliver large amounts of low end with conviction. The built-in Class-D amplifier module delivers 5000 watts peak power, while the maximum sound pressure according to QSC reaches 141 dB peak at 1 meter.
Deep and powerful bass
The LS218 has a frequency response of 35 Hz to 98 Hz at -6 dB. With the special DEEP™ mode, the system can be extended even further into the sub-bass, down to 32 Hz at -6 dB. The -10 dB frequency range runs from 33 Hz to 111 Hz, or from 29 Hz to 111 Hz when DEEP™ mode is used.
This makes the LS218 particularly suitable for music styles where low-frequency reproduction plays a key role. Think of dance, house, techno, live music and large events where not only volume but also physical impact is desired.
Two 18-inch drivers for maximum output
Where the LS118 uses a single 18-inch woofer, the LS218 features two 18-inch drivers. Consequently, the LS218 is designed for even higher output and greater low-end headroom.
The combination of the two long-excursion drivers and the powerful amplifier module makes the LS218 an excellent choice for larger PA systems and professional productions where a single subwoofer simply cannot provide enough low-end pressure.
Cardioid configuration
A key advantage of the LS218 is the ability to operate the subwoofer in omnidirectional or cardioid mode. A cardioid configuration requires at least two LS218 units.
With a cardioid setup, low-frequency energy can be concentrated at the front of the system while reducing unwanted low frequencies at the rear. This is particularly interesting for stages and events where the amount of bass directed towards the stage or the back of the system must be limited as much as possible.
QSC Acoustic Linear Phase
The LS218 utilizes QSC Acoustic Linear Phase (ALP). This technology is designed to allow the LS218 to work coherently with other QSC speakers within the same system.
This allows the subwoofer to be perfectly combined with the QSC LA108 and LA112 active line array speakers. The LS218 is therefore not just a standalone subwoofer, but part of a complete professional QSC L Class system.
Dante and QSC SysNav
In terms of connectivity, the LS218 is also fully focused on professional applications.
The subwoofer features analog XLR connections and two RJ45 EtherCON connections for Dante and QSC SysNav. Additionally, the AC power can be looped through to other equipment via PowerCON TRUE1.
With the QSC SysNav™ App, users can design, configure, control, monitor, and apply the correct signal processing to L Class systems. The software supports individual subwoofers, full arrays, and groups.
This makes the LS218 attractive for professional sound engineers and rental companies who want to centrally configure and control multiple speakers and subwoofers.
Robust professional construction
The LS218 is built for professional use. The enclosure consists of 15 mm birch plywood and features a durable Polyurea coating. The front is fitted with a sturdy 16-gauge powder-coated steel grille.
Despite its massive performance, QSC continues to pay attention to practical usability. The LS218 can be deployed both horizontally and vertically and features options for mounting and ground-stack applications.
With a net weight of approximately 83.5 kg, this is obviously not a small mobile subwoofer, but a serious professional system for situations where maximum low-end reproduction is more important than ultra-light portability.
Who is the QSC LS218 for?
The QSC LS218 is intended for users who want to get the most out of a professional PA system. Think of:
- Professional DJs
- Live bands
- Event companies
- Rental companies
- Festivals
- Concerts
- Clubs and venues
- Theaters
- Professional AV productions
- Fixed installations
- Large mobile PA systems
For a complete QSC L Class set, the LS218 forms a powerful low-end section beneath the LA108 or LA112 line array systems.
Why choose the QSC LS218?
- New generation QSC L Class subwoofer
- 2 × 18-inch long-excursion drivers
- 5000 watt Class-D amplification
- Impressive 141 dB peak SPL
- Very deep low-end reproduction
- DEEP™ mode for extra sub-bass
- Omnidirectional and cardioid configuration
- Dante network audio
- QSC SysNav control and monitoring
- QSC AWARE system intelligence
- Acoustic Linear Phase technology
- Professional plywood enclosure
- Durable Polyurea finish
- Designed for combination with LA108 and LA112
- Suitable for both mobile and fixed professional applications
QSC LS218 at SpeakerKoning
The QSC LS218 is no ordinary subwoofer. This is a serious professional bass cannon for systems where impact, sound pressure and control are paramount.
With two 18-inch woofers, 5000 watt Class-D amplification and a maximum output of 141 dB, the LS218 has more than enough headroom for large productions. At the same time, QSC’s system technologies such as ALP, AWARE, DEEP™ and SysNav ensure that the massive amount of low end remains controlled and professionally usable.
For those building a QSC L Class system and looking for maximum low-end reproduction, the LS218 is a very powerful choice.
QSC LS218 – two 18-inch drivers, 5000 watts and 141 dB. This is serious sub-bass.
