WideLine Ground-Support Subwoofer | QSC Audio GP218-sw instruction

GP218-sw

WideLine™ Ground-Support Subwoofer

Features

•Very high acoustic output capability – 140.5 dB SPL (1m) peak

•Tight musical “punch” combined with low-frequency extension down to 27.4 Hz

•Elegant transport and handling features including an optional transport dolly plus soft cover and four thoughtfully placed handles

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

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

The GP218-sw is a premium, high- performance, rectangular dual 18" subwoofer designed for ground stacked use in the most demanding touring or installed concert applications. With an impressive combination of punch, low-frequency extension and musical accuracy, the GP218-sw is an ideal companion for the acclaimed QSC WideLine series as well as other professional sound reinforcement systems.

For suspension in permanent installations each GP218-sw subwoofer comes with a total of sixteen (16) threaded M10 inserts (four per side).

For ground-supported applications, the subwoofers may be stacked horizontally using their interlocking feet and recess features machined into the enclosure’s top panel.

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 GP218-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. Woofers are protected by a heavy-duty, 14 gauge, powder coated steel grille and housed in separate chambers 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.

Like its “flyable” brother, the WL218-sw, the GP218-sw subwoofer’s sonic performance and output capacity are second to none. But for those who only need the exceptional sonic performance, without the need for expensive rigging and flying capability – the GP218-sw gives the exact same sonic impact, but for a more economical price tag.

QSControl.net™/ BASIS™ DSP files are available for download. They have been fine tuned for use with the GP218-sw and the WL218-sw to provide optimized performance right out of the box.

GP218-sw specifications

The QSC Audio GP218-sw is a powerful dual 18-inch subwoofer designed for professional audio applications in live sound and installation environments. This robust subwoofer is part of QSC’s GP series, known for its exceptional performance and reliability, making it ideal for concerts, events, and venues requiring deep low-frequency reinforcement.

One of the standout features of the GP218-sw is its dual high-excursion 18-inch drivers, which deliver impactful low frequencies with precision and clarity. These drivers are engineered for maximum efficiency, ensuring that they can handle substantial power levels while maintaining excellent sound quality. This capability allows the GP218-sw to produce deep, thunderous bass that is evident in various audio applications, from music festivals to dance clubs.

The GP218-sw is designed with QSC's innovative technologies to enhance performance. The enclosure is constructed from durable wood, providing structural integrity and resistance to resonances that could color the sound. Each subwoofer features a finely tuned port design that optimizes airflow, minimizing turbulence and noise, and ensuring that the bass produced is clean and free from distortion.

Another significant characteristic of the GP218-sw is its versatile connectivity options. It comes equipped with dual speakON NL4 connectors and parallel connections, making it easy to integrate into existing sound systems. This flexibility allows audio professionals to configure their setups according to specific venue requirements, enhancing the overall sound experience.

The GP218-sw is also engineered for ease of transport and setup. The design includes integrated handles and an optional dolly, making it user-friendly for touring musicians and audio engineers. Moreover, the rugged exterior is designed to withstand the rigors of transportation and use in various environments, ensuring a long lifespan.

In summary, the QSC Audio GP218-sw stands out as a reliable and powerful solution for bass-heavy audio applications. With its dual 18-inch drivers, innovative enclosure design, and versatile connectivity, it delivers unparalleled low-frequency performance. Whether used in large venues, outdoor events, or for mobile setups, the GP218-sw is a subwoofer that meets the demands of professional sound requirements, making it a top choice for audio professionals worldwide.