QSC GP118-sw-BK User Manual
GP Series
GP118-sw
High Output, Direct Radiating,
Vented Subwoofer
GP118-sw
Features
• Premium-grade, long
excursion, high power 18-inch
transducer with 4-inch
voicecoil, dual layer spider
and triple-roll surrounds
• Interlocking feet and recess
features allow for rigid vertical
stacking
• Built-in handles for ease of
transport
• Threaded pole cup for
deploying a full-range
loudspeaker on top
• 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
Performance Spaces ∙ Worship Facilities ∙ Portable and Live Sound
∙ Dance Clubs ∙ Indoor Sports Facilities ∙ Themed Entertainment
The GP118-sw is a premium, highperformance, direct radiating 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 GP118-sw is an ideal
companion to QSC’s WideLine Series, ILA
Series, AcousticPerformance™ Series and
AcousticDesign™ Series loudspeakers.
The GP118-sw features an 18-inch
transducer that incorporates 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
to further reduce distortion.
The GP118-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 aestheic design,
the transducer is protected by a 16-gauge,
powder coated steel grille.
The GP118-sw includes built-in handles for
ease of transport. For increased versatility,
the subwoofer can be stacked vertically using
their interlocking feet and recess features
machined into the enclosure’s top panel.
Moreover, the GP118-sw can be reversed to
facilitate cardioid array deployment.
GP118-sw Details
(25.8in)
[656mm]
(25.8in)
[656mm]
(20.9in)
[531mm]
100
40
45
50
55
60
65
70
75
80
85
90
95
120
0
10
20
30
40
50
60
70
80
90
100
110
Frequency (Hz)
200020 100 1000
Impedance
SPL/Im pedance
Dimensions:
(30.4in)
[772mm]
(20.1in)
[512mm]
(25.8in)
[656mm]
SPL/Im pedance
100
95
90
85
80
75
70
65
60
55
50
45
40
20 100 1000
SPL/Im pedance
100
95
90
85
80
75
70
65
60
55
50
45
40
20 100 1000
Frequency (Hz)
Frequency (Hz)
Impedance
Frequency Response
2000
2000
(20.9in)
[531mm]
Specifications:
120
110
100
90
80
70
60
50
40
30
20
10
0
120
110
100
90
80
70
60
50
40
30
20
10
0
System Details
Frequency Response (-10dB) 29Hz – 800Hz
Power Capacity
1
850W (82.5V) continuous
1700W peak
Nominal Sensitivity
Maximum Rated SPL 129dB @1m, continuous3
2
98dB, 1W@1m
135dB @1m, peak
4
Nominal Impedance 8Ω
Transducer 457mm (18-inch) driver with
102mm (4-inch) Voicecoil
Recommended Power 1700W
Enclosure Details
Input Connector Dual NL4 connector
Pin Outs 1+/1- Sub
2+/2- N/C
Enclosure Material 18 mm Baltic birch plywood
Attachment Points 16x threaded M10 inserts
Grille 16 Gauge powder coated steel
Dimensions (HxWxD) 531 mm x 656 mm x 772mm
(20.9" x 25.8" x 30.4")
Net Weight 50.3 kg (111 lb)
Shipping Weight 54.9 kg (121 lb)
As part of QSC’s ongoing commitment to product development,
specifications are subject to change without notice.
1
2 hour rating using IEC60268 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 6dB
1675 MacArthur Boulevard • Costa Mesa, CA 92626 • Ph: 800/854-4079 or 714/957-7100 • Fax: 714/754-6174 please recycle
© 2012 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. DMT is a trademark of QSC. Speakon is a registered trademark of Neutrik
GP118-sw Spec Sheet 12/5/2012
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