User manual QSC AUDIO WL218-SW DATASHEET

[. . . ] WL218-sw 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 WideLineTM Subwoofer 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. [. . . ] 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. 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 heavyduty, 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". [. . . ] They are tuned for use with WL218-sw to provide optimized performance. WL218-sw Dimensions | Specifications 45. 9" 1166 mm Top 34. 75" 882 mm 21. 3" 541 mm Front Side Configuration Low-frequency Transducer Frequency Response (±3 dB)1 Frequency Range (-10 dB)1 Nominal Impedance Continuous Power Capacity 2 / Recommended Power Sensitivity (1 W at 1 m)1 Maximum Output ­ Continuous / Peak (SPL at 1 m) Cabinet Type Enclosure Material Grille Connectors Pin Outs 2 x 18" vented subwoofer 2 x 850 W, 8 18" woofer with a 4" voice coil, ceramic magnet assembly 37 Hz ­ 200 Hz (without processing) 31 Hz ­ 1 k (without processing) 4 1700 W / 3000 W 101 dB 133 dB / 139 dB Vented, trapezoidal enclosure Baltic birch plywood / 36 mm baffle and side panels; 15 mm top and bottom 14 gauge powder coated steel 2 x NL4 in parallel Pins 1+/12+/2Sub NC Attachment Points Weight (Net / Shipping) Dimensions (HWD) Accessories Available 1) Half-space conditions 2) 2 Hrs, AES1984-2, 40 ­ 400 Hz, tested as system Specifications subject to change without notice. Integral, adjustable rigging system, vertical splay adjustable in 1° increments from 0° ­ 10° 204 lb (92. 5 kg) / 244 lb (110 kg) ­ includes dolly 21. 3" x 45. 9" x 34. 75" (541 mm x 1166 mm x 882 mm) AF218-sw Array Frame (optional) COVER WL218-sw Soft Cover (optional) QSC, the QSC logo, QSControl. net and BASIS are registered trademarks of QSC Audio Products, LLC in the U. S. Patents may apply or be pending. 1675 MacArthur Boulevard · Costa Mesa, CA 92626 · Ph: 800/854-4079 or 714/957-7100 · Fax: 714/754-6174 WL218sw Spec Sheet ­ 06/19/08 qscaudio. com [. . . ]