QSC’s GP118 and GP218 subwoofers
offer a unique solution that addresses
the requirements of digital motion picture
soundtracks. Featuring high excursion, 18"
low-frequency transducers mounted in
ported enclosures, these systems extend
response to the lowest audible frequency.
The GP118/GP218 are premium, highperformance, direct radiating 18-inch
subwoofers for screen channel or surround
channel low frequency extension. With an
impressive combination of low frequency
performance and musical accuracy, the
GP118 and GP218 are an ideal subwoofer
companion to QSC’s AcousticPerformance™
Series loudspeakers when used in high
output immersive sound surround
applications. Cabinets can be placed on
the floor, or suspended from the ceiling
to avoid occupying floor seating space.
The GP118 features a single 18-inch
transducer that incorporates a double layer
spider and triple roll surround for extended
and controlled excursion at extreme
power. The GP218 features two of these
same transducers. 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 also further reduces distortion.
The GP118 and GP218 enclosures are
constructed of 18mm Baltic birch plywood
with internal bracing to eliminate acoustic
losses due to panel resonance while
maintaining the enclosure’s robustness.
Built-in M10 threaded fittings allow the
GP118 and GP218 to be easily and
safely suspended (using installer provided
hardware). 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. The
subwoofers can be stacked vertically using
their interlocking feet and recess features
machined into the enclosure’s top panel.
Features
• GP118 features one premiumgrade, long excursion,
high power 850 W 18-inch
transducer
• GP218 features dual
premium-grade, long
excursion, high power 850 W
18-inch transducers
• Interlocking feet and recess
features allow for rigid vertical
stacking
• 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
GP Series
GP118-sw / GP218-sw
Flyable Cinema Subwoofers
GP118-sw / GP218-sw
System Details GP118 GP218
Frequency Range (-10dB) 29 Hz to 800 kHz 24 Hz to 1.2 kHz
Rated Noise Power (Voltage)1 850 W continuous (82.5 V rms) 1700 W continuous (82.5 V rms)
Sensitivity2 98 dB, 1W@1m 102 dB, 1W@1m
Maximum Rated SPL 129 dB @1m, continuous3
135 dB @ 1m, peak4
135 dB @ 1m, continuous
141 dB @ 1m, peak
Rated Impedance 8Ω 4Ω
Recommended Amplifier Power 1700 Watts 3000 to 4000 W
Transducer 18" (457 mm) driver with 4" (102 mm) voicecoil Two 18" (457 mm) drivers with 4" (102 mm) voicecoils
Enclosure Details
Input Connector Dual NL4 connector Dual NL4 connector
Pin Outs 1+/1- Sub. 2+/2- N/C 1+/1- Sub. 2+/2- N/C
Enclosure Material 18 mm Baltic birch plywood 18 mm Baltic birch plywood
Attachment Points 16x threaded M10 inserts 16x threaded M10 inserts
Grille 16 Gauge powder coated steel 16 Gauge powder coated steel
Dimensions (HxWxD) 22.1" x 27.6" x 30.3" (561 x 701 x 770 mm) 20" x 27.6" x 30.3" (508 x 1198 x 762 mm)
Net Weight 111 lb (50.3 kg) 191 lb (87 kg)
Shipping Weight 121 lb (54.9 kg) 209 lb (95 kg)
As part of QSC’s ongoing commitment to product development, specifications are subject to change without notice.
1 2 hour rating using IEC 60268 noise based on minimum impedance
2 Mid-band based on nominal impedance
3 Calculated as the nominal sensitivity plus 10x the log of continuous rated power in volts squared, divided by nominal impedance
4 Calculated as the continuous calculated max. output plus 6 dB
Specifications:
GP118
GP218
Front
Top Side
GP118-sw / GP218-sw Details
GP118 | GP218 Spec Sheet 3/27/2013
1675 MacArthur Boulevard • Costa Mesa, CA 92626 • Ph: 800/854-4079 or 714/957-7100 • Fax: 714/754-6174 please recycle
© 2013 QSC Audio Products, LLC. All rights reserved. QSC and the QSC logo are registered trademarks of QSC Audio Products, LLC in the U.S. Patent and Trademark office and other countries.
Speakon is a registered trademark of Neutrik
(25.8in)
[656mm]
(20.9in)
[531mm]
(20.1in)
[512mm]
(30.4in)
[772mm]
(25.8in)
[656mm]
(20.9in)
[531mm]
(20.1in)
[512mm]
(30.4in)
[772mm]
(25.8in)
[656mm]
(20.9in)
[531mm]
(20.1in)
[512mm]
(30.4in)
[772mm]
22.1"
(561mm)
22.1"
(561mm)
30.3"
(770mm)
27.6"
(701mm)
Front
Top Side
20"
(508mm)
20"
(508mm)
30"
(762mm)
47.2"
(1198mm)