QSC GP218-SW

High Output, Direct Radiating, Vented Subwoofer

The GP218-sw is a premium, highperformance, direct radiating dual 18-inch subwoofer designed for use in portable and installed sound applications. This powerful subwoofer offers plenty of "punch" while maintaining ample extension so the musically important fundamentals are solidly and accurately reproduced. With an impressive combination of low-frequency extension and musical accuracy, the GP218-sw is an ideal companion to QSC's WideLine Series, ILA Series, AcousticPerformance™ Series and AcousticDesign™ Series loudspeakers.

Ideal for professional DJ Speakers systems, the GP218-sw features two 18-inch transducers that incorporate a double layer spider and triple roll surround for extended and controlled excursion at extreme power. The 4-inch voicecoil 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 to further reduce distortion. The GP218-sw is housed in an 18mm Baltic birch plywood enclosure and finished in an environmentally friendly, waterborne, polymer finish rugged enough for the demands of everyday use while also being field repairable. Internal bracing is employed to eliminate acoustic losses due to panel resonance while maintaining the enclosure's robustness.

Further contributions to cabinet rigidity include vent walls constructed of the same plywood as the enclosure. Ample port area allows free movement of air resulting in minimal turbulence and port distortion. Finishing the enclosure's aesthetic design, the transducer is protected by a 16-gauge, powder coated steel grille.

To aid in transporting the GP218-sw, the unit features built-in handles with options for a dolly board and soft cover. For increased versatility, the GP218-sw can be stacked vertically using their interlocking feet and recess features machined into the enclosure's top panel.

Features

• Dual premium-grade, long excursion, high power 18-inch transducers with 4-inch voicecoil, dual layer spider and triple-roll surrounds
• Interlocking feet and recess features allow for allow for rigid vertical stacking
• Built-in handles along with the optional dolly board and soft cover offers ease of transport
• M10 fittings allows for suspension in permanent and portable applications
• Dual NL4 Speakon connectors
• 18mm Baltic birch plywood construction
• 16-Gauge powder coated Steel Grilles
• Available in black and white
• Complete EASE, CAD & BIM information available online

Specification

System Details

• Frequency Range (-10dB) 24Hz - 1.2kHz
• Power Capacity1 1700W (82.5V) continuous 3400W peak
• Nominal Sensitivity2 102dB, 1W@1m
• Maximum Rated SPL 135dB @1m, continuous3
  141dB @1m, peak4
• Nominal Impedance 4Ω
• Transducer 457mm (18-inch) driver with 102mm (4-inch)
  Voicecoil
• Recommended Power 3000 - 4000W

Enclosure Details

• Input Connector Dual NL4 connector
• Pin Outs 1+/1- Sub
  2+/2- N/C
• Enclosure Material 18mm Baltic birch plywood
• Attachment Points 16x threaded M10 inserts
• Grille 16 Gauge powder coated steel
• Dimensions (HxWxD) 508 mm x 1198 mm x 762 mm
  (20" x 47.2" x 30")
• Net Weight 87 kg (191 lb)
• Shipping Weight 95 kg (209 lb)
• Optional Accessories CP218-0 transportation dolly
  CP218-1 transportation dolly plus soft cover

  What is the QSC GP218-SW?
A: The GP218-SW is a high-output, passive ground-support subwoofer with two 18″ long-excursion woofers designed for professional PA systems, touring, and installed sound applications.

  Is the GP218-SW powered or passive?
A: Passive - it does not include an internal amplifier, so you must use an external power amplifier and DSP/crossover for best performance.

  What kind of amplifier do I need?
A: QSC recommends a power amplifier capable of ~3000 - 4000 W to properly drive this subwoofer for high output without clipping.

  How loud can it get?
A: It can produce very high output, up to about 140.5 dB SPL peak at 1 m - suitable for large venues and live sound reinforcement.

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