SC-1120
Preliminary
SC-1120
Screen Channel Loudspeaker
for Small Rooms
Features
• Single enclosure two-way screen
channel loudspeaker
• Optimized for small room
applications up to 35 feet
(11 meters) from screen to
last row of seating
• Requires less than 12 inches
(305 mm) behind screen
• Passive crossover requires only one
amplifier channel
• 90° Axisymmetric horn
• 12" (305 mm) woofer with 2.5"
(63 mm) voice coil
• 1.75" (44 mm) voice coil HF
compression driver
• Screw-type barrier-strip connectors
The SC-1120 extends QSC’s commitment to
the cinema market by offering high-quality
QSC sound for small room systems. As a
member of the DCS Digital Cinema Series,
the SC-1120 is a cost-effective screen
channel loudspeaker for cinemas no longer
than 35 feet (11 meters) from the screen
to the last row of seating. The SC-1120
features a 12" (305 mm) woofer with 2.5"
(63 mm) voice coil for exceptional low
frequency bandwidth reproduction. The LF
driver crosses over into a high frequency
compression driver with 1.75" (44 mm)
voice coil. Both drivers are combined in a
single enclosure, simplifying installation.
The SC-1120 provides coverage over a
90° angle, ideal for small room cinema
sound applications. Installation is as simple
as removing the SC-1120 from its carton
and positioning it behind the screen. The
enclosure was designed to be mounted on
a platform and its shallow depth (less than
12 inches or 305 mm) dramatically reduces
space requirements behind the screen.
SC-1120 Details
System Details
C
B
90 degrees Axisymmetric
Frequency Range (-10dB)
48 Hz to 19 kHz
Rated Noise Power (Voltage)2
300 W
Sensitivity
95.5 dB
1
3
Maximum continuous SPL
120 dB
Maximum peak SPL4
126 dB
Rated Impedance
8Ω
Maximum Recommended Amplifier Power
600 Watts
Transducers
LF: 12" (305 mm) woofer, 2.5" voice coil
HF: Compression driver with 1.75" (44 mm) voice coil
4
Enclosure Details
Input Connector
4-position barrier strip
Enclosure Material
MDF,
non-reflective black vinyl
8
7
6
5
4
THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION
WHICH IS THE PROPERTY OF QSC AUDIO PRODUCTS, THAT
MAY NOT BE DISCLOSED, REPRODUCED OR USED WITHOUT
EXPRESS WRITTEN CONSENT FROM QSC AUDIO PRODUCTS.
Grille
None
Dimensions (HxWxD)
27.2 x 19.5 x 11.7 inches (690 x 497 x 297 mm)
Net Weight
51 lb (23.2 kg)
297.0
[11.69]
D
As part of QSC’s ongoing commitment to product development,
specifications are subject to change without notice.
8
8
8
7
7
CUMENT
THIS
CONTAINS
DOCUMENT
PROPRIETARY
CONTAINS PROPRIETARY
INFORMATION
THIS DOCUMENT
INFORMATION
CONTAINS PROPRIETARY INFORMATION
S THE WHICH
PROPERTY
IS THE
OFPROPERTY
QSC AUDIOOF
PRODUCTS,
QSC
WHICH
AUDIO
IS THAT
THE
PRODUCTS,
PROPERTY
THAT
OF QSC AUDIO PRODUCTS, THAT
T BE DISCLOSED,
MAY NOT BEREPRODUCED
DISCLOSED, REPRODUCED
OR MAY
USEDNOT
WITHOUT
BE
ORDISCLOSED,
USED WITHOUT
REPRODUCED OR USED WITHOUT
S WRITTEN
EXPRESS
CONSENT
WRITTEN
FROM
CONSENT
QSC AUDIO
EXPRESS
FROM
PRODUCTS.
QSCWRITTEN
AUDIO PRODUCTS.
CONSENT FROM QSC AUDIO PRODUCTS.
D
SC-1120
Rated Coverage Angle (-6 dB)
7
6
6
6
5
Footnotes
1 Free-field, unprocessed, -10 dB from on-axis sensitivity
2 AES2-1984 noise signal for 2 hrs
3 On-Axis, free-field sensitivity, 2.83V, 1 m
4 Calculated from rated noise voltage and sensitivity
5
5
4
4
3
3
2
502.2 502.2
[19.77] [19.77]
C
502.2
[19.77]
497.1 497.1
[19.57] [19.57]
497.1EXPRESS WRITTEN CONSENT FROM QSC AUDIO PRODUCTS.
[19.57]
REV
REV
ECO
ECO
REV
ECO
A
A
-
-
A
-
147.0
[5.79]
297.0
[11.69]
8
147.0
[5.79]
147.0 147.0
[5.79] [5.79]
3
2
2
1
REVISIONS
REVISIONS
297.0 297.0
[11.69] [11.69]
D
4
DESCRIPTION
DESCRIPTION DESCRIPTION
RELEASE
RELEASE
502.2
[19.77]
- -
-
7
6
5
-
-
D
D
C
C
4
THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION
WHICH IS THE PROPERTY OF QSC AUDIO PRODUCTS, THAT
MAY NOT BE DISCLOSED, REPRODUCED OR USED WITHOUT
B
690.1 690.1
709.2 709.2690.1
[27.17]
[27.17] [27.17]
[27.92] [27.92]
709.2
[27.92]
709.2
[27.92]
297.0
[11.69]
337.0
[13.27]
177.5 177.5
[6.99] [6.99]
502.2
[19.77]
177.5
[6.99]
126.5
[4.98]
147.0
[5.79]
497.1
[19.57]
337.0
[13.27]
205.7 205.7
[8.10] [8.10]
B
-
497.1
[19.57]
D
337.0 337.0
[13.27] [13.27]
1
EFFISSUED
DATE BY
ISSUED
EFF DATE ISSUED
BY EFF
BYDATE
RELEASE
690.1
[27.17]
C
1
REVISIONS
205.7
[8.10]
200.0
[7.87]
B
C
126.5 126.5
[4.98] [4.98]
A
126.5
[4.98]
38.5 38.5
[1.51] [1.51]
38.5
[1.51]
B
48.5
[1.91]
355.6
[14.00]
4. PARTS ARE SYMMETRICAL ABOUT CENTER LINES
UNLESS OTHERWISE NOTED.
70.8
[2.79]
690.1
[27.17]
3. SYMBOL INDICATES CENTER OF BALANCE.
200.0
200.0 200.0
[7.87] [7.87]
2. TOLERANCES
(MM): X 5, [7.87]
ANGLES: 1 .
709.2
[27.92]
1. NET WEIGHT APPROX. 23.1 / 51.0 [KG/LBS].
NOTE: UNLESS OTHERWISE SPECIFIED
355.6 355.6
[14.00] [14.00]
A
A
PARTS
4. PARTS
ARE SYMMETRICAL
ARE SYMMETRICAL
4. PARTSABOUT
ARE SYMMETRICAL
ABOUT
CENTER
CENTER
LINESABOUT
LINESCENTER LINES
UNLESS
UNLESS
OTHERWISE
OTHERWISE
UNLESS
NOTED.NOTED.
OTHERWISE NOTED.
355.6
[14.00]
B
48.5 48.5
8
[1.91] [1.91]
70.8 70.8
[2.79] [2.79]
48.5
[1.91]
70.8
[2.79]
DATE
DECIMALS DECIMALS
ANGLESDECIMALS
ANGLES DECIMALS
DECIMALS DECIMALS
CHECKED
.X .5[.02] .X.XX.5[.02]
.5[.02]
1/2 .X
1/2 CHECKED
.25[.010]
.XX .25[.010]
.XX .25[.010]
8
7
A
A
QSC AUDIO
QSC AUDIO
PRODUCTS,
PRODUCTS,
QSC
LLC
AUDIO
LLC
PRODUCTS, LLC
DATE
DATE
(DD-MMM-YY)
DRAWN
NA
NA
NA
NA
ANGLES
1/2 CHECKED
DEBURR EDGES
DEBURR
.25 [.010]
EDGES
R MAX
.25 [.010]DEBURR
R MAX EDGES .25 [.010] R MAX
MFG ENG MFG ENG
MATERIAL
1 .
MATERIAL MATERIAL
QA CHECK QA CHECK
FINISH
OTE: UNLESS
NOTE: UNLESS
OTHERWISE
NOTE:
OTHERWISE
UNLESS
SPECIFIED
SPECIFIED
OTHERWISE SPECIFIED
8
4
UNLESS OTHERWISE
UNLESS OTHERWISE
SPECIFIEDSPECIFIED
UNLESS APPROVALS
OTHERWISE
SPECIFIED
APPROVALS
APPROVALS
(DD-MMM-YY)
(DD-MMM-YY)
DIMENSIONS
DIMENSIONS
IN MILLIMETERS
IN MILLIMETERS
[IN]DIMENSIONS
[IN] IN MILLIMETERS [IN]
NET 1.
WEIGHT
NET WEIGHT
APPROX.
1.APPROX.
NET
23.1WEIGHT
/ 51.0
23.1[KG/LBS].
/APPROX.
51.0 [KG/LBS].
23.1 / 51.0 [KG/LBS].
8
5
ENG. SERVICES
ENG. SERVICES
ENG.
SERVICES
11/11/13
11/11/13
Specifications subject to change without notice.
15,.ANGLES:
6
DRAWN
DRAWN
TOLERANCES
TOLERANCES
ARE:
ARE:
TOLERANCES ARE:
SYMBOL
3. SYMBOL
INDICATES
INDICATES
3. SYMBOL
CENTER
CENTER
OF
INDICATES
BALANCE.
OF BALANCE.
CENTER OF BALANCE.
TOLERANCES
2. TOLERANCES
(MM):2.X(MM):
TOLERANCES
5, ANGLES:
X 5, ANGLES:
(MM):
1 .X
337.0
[13.27]
7
FINISH
NA
NA
-NA
SPEAKER,
SPEAKER,
FINISHED,
FINISHED,
SPEAKER,
12" 12"
FINISHED,126.5
12"
[4.98]
TOP
TOP BOX,
SB-1120
SB-1120
TOP BOX, SB-1120
- BOX,
-
MFG ENG
-NA
1675 MACARTHUR
1675 MACARTHUR
BOULEVARD
1675
BOULEVARD
MACARTHUR BOULEVARD
COSTA MESA,
COSTA
CA
MESA,
92626
CA COSTA
92626 MESA, CA 92626
11/11/13
-
QA CHECK
NA
CAGE
CAGE
SIZE
SIZECODECAGE
SIZE
DRAWING
DRAWING
NO. CODE
-CODE NO.
FINISH
DRAWING INFO:
DRAWING INFO:
DRAWING INFO:
WP-001125-2D.2.0
WP-001125-2D.2.0
WP-001125-2D.2.0
D
DRAWING NO.
REV
REV
00PW4
00PW4
2
2
D 00PW4WP-001125-2D
D WP-001125-2D
WP-001125-2D
MODEL INFO:
MODEL INFO:
MODEL
INFO:
SHEET
SHEET
WP-001125-3D.2.0
WP-001125-3D.2.0
WP-001125-3D.2.0
SCALE:
SCALE:
1 OF
1 1 OF 1SHEET
DO NOT SCALE
DOSCALE:
NOTDRAWING
SCALE DRAWING
DO
NOT SCALE
DRAWING
7
1675 MacArthur
Boulevard
• 6Costa Mesa,
CA
92626
• Ph: 800/854-4079
or 714/957-7100
•3 Fax: 714/754-6174
7
6
6
5
5
5
4
4
4
3
3
2
2
please1 recycle
1
2
200.0
[7.87]
© 2013 QSC and the QSC logo are registered trademarks of QSC Audio Products, LLC in the U.S. Patent and Trademark office and other countries.
All other trademarks are the property of their respective owners. Patents may apply or be pending.
SC-1120 Spec Sheet 11/22/2013
A
4. PARTS ARE SYMMETRICAL ABOUT CENTER LINES
UNLESS OTHERWISE NOTED.
3. SYMBOL
INDICATES CENTER OF BALANCE.
48.5
[1.91]
355.6
[14.00]
70.8
[2.79]
1
REV
2
1 OF 1