WideLine Subwoofer, Features | QSC Audio WL218-sw instruction

WL218-sw

WideLine™ Subwoofer

Features

•Simple, convenient suspension system based on the proven QSC WideLine design. Supports up to 8 WL218-sw subwoofers with 10:1 design factor

•Very high acoustic output capability – 139 dB SPL (1m) peak

•Ample “punch” combined with low-frequency extension down to 31 Hz

•Comprehensive transport and handling features including an easy to attach dolly and twelve thoughtfully placed handles

•Premium-grade, long-excursion, high-power woofers with 4", fiberglass voice coils, double layer spiders and triple roll surrounds

•Birch ply enclosure with independent, dual chambers and extensive internal bracing for rigidity and solid, accurate reproduction

The WL218-sw is a premium, high-performance, dual 18" subwoofer designed for suspended or ground stacked use in the most demanding touring or installed concert applications. With an impressive combination of punch, low-frequency extension and accuracy, the WL218-sw is an ideal companion for QSC’s acclaimed WideLine as well as other professional sound reinforcement systems.

Sound system designers and operators are increasingly turning to subwoofer systems that are flown with the main array for a more seamless acoustical transition from the bass to the low-mid region. With a simple, three-point suspension design that is essentially a scaled up version of the QSC WideLine system, the WL218-sw fulfills the requirement while also delivering powerful and stunningly accurate low frequency output.

Suspension of the array requires one AF218-sw for each subwoofer array. The AF218-sw is a simple, heavy-duty array frame constructed of welded, aviation-grade 6061-T6 aluminum and intended for suspension of up to eight WL218-sw subwoofers with a 10:1 design factor. For ground-supported applications,

the subwoofers may be stacked using the interlocking feet and recess features machined into the enclosure’s end caps.

The 18" woofers incorporate a double layer spider and triple roll surround for extended and controlled excursion at extreme power. The 4" voice coil is wound on a fiberglass former to prevent deformation at high operating temperatures and is extensively vented to reduce power compression. An aluminum demodulating ring is employed for low distortion.

The extremely musical yet powerful performance of the subwoofer is the result of carefully balancing the transducer selection, cabinet volume and port tuning. The resulting system offers plenty of “punch” while maintaining ample extension so the musically important and satisfying fundamentals are solidly and accurately reproduced.

The enclosure of the WL218-sw is constructed of premium quality birch plywood finished in an environmentally friendly, waterborne, polymer finish that stands up to life on the road while also being field repairable. Extensive internal bracing is employed to eliminate acoustic losses due to panel resonance. Further

contributions to cabinet rigidity come from vent walls constructed of the same plywood as the enclosure. Each woofer is protected by a heavy- duty, 14 gauge, powder coated steel grille and housed in its own, separate chamber to prevent failure of one driver from causing damage to the other.

Despite the extremely large amount of air moving in the ports, careful attention to detail has resulted in a system that is free of port distortion “chuffing”. Ample port area allows massive amounts of air to move freely with minimal turbulence and the ports are arranged so as to eliminate asymmetrical loading of the woofers, which can result in distortion and voice coil failure related to rocking-modes.

Transport and handling were also given high priority. No matter how the box is deployed one of the dozen handles will be where it needs to be. The included dolly has rugged, 3.5", ball bearing casters and an elegantly easy- to-use, snap on mechanism for attachment to the enclosure.

QSControl.net™ / BASIS™ DSP files are available for download. They are tuned for use with WL218-sw to provide optimized performance.

WL218-sw specifications

QSC Audio is renowned for producing high-quality audio solutions, and their speaker systems, including the 369, DB218-SW, AF218-SW, and WL218-SW, showcase the company’s commitment to delivering exceptional sound performance across various applications.

The QSC 369 model is engineered for versatility and portability, making it ideal for both live sound and installation applications. This three-way loudspeaker features a high-output, low-frequency driver, a mid-range transducer, and a high-frequency compression driver. The 369’s robust construction ensures durability while its exceptional sound clarity and impressive output levels provide an immersive listening experience.

The DB218-SW is a dual 18-inch subwoofer designed to produce deep, powerful bass. It is equipped with advanced driver technology that allows for high SPL (Sound Pressure Level) outputs without distorting audio fidelity. With a built-in crossover and equalization capabilities, the DB218-SW can seamlessly integrate into any sound system, offering flexibility for both mobile and fixed install scenarios.

Similarly, the AF218-SW subwoofer is optimized for high-performance applications. This model also utilizes dual 18-inch drivers to deliver profound low-frequency extension. Its cabinet design incorporates advanced porting techniques, minimizing airflow turbulence and enhancing sound clarity. The AF218-SW is ideal for theaters, concert venues, and sporting events, providing the necessary low-end support to round out a powerful sound system.

The WL218-SW is designed specifically for installations where space is at a premium. This compact subwoofer boasts the same high-performance drivers found in its larger counterparts, ensuring robust low-frequency reproduction. The WL218-SW’s sleek design allows for versatile placement options in various environments, from nightclubs to corporate events.

All these speaker systems are built with QSC’s innovative technologies, such as advanced thermal protection, ensuring reliability even during prolonged use. Their rugged construction contributes to their longevity while maintaining high acoustic performance. Moreover, each model is compatible with QSC amplifiers, allowing users to create a tailored audio experience, whether for live sound applications or permanent installations. Overall, the QSC Audio lineup, including the 369, DB218-SW, AF218-SW, and WL218-SW, reinforces the brand's reputation for supreme audio quality and reliability across diverse settings.