2
H Z
X + 0 + Y 0 M
O W N E R ’ S G U I D E
PRODUCT LINE:
®
MODEL
NUMBER:
SCS178 (230V)
DESIGN GOAL: Bring the thrill of live performance and movie sound to the
home environment by calling on JBL’s professional engineering leadership.
SATELLITE TYPE:Titanium-laminate-dome tweeter, reflex-loaded enclosure
SUBWOOFER TYPE: Bass-reflex enclosure
PORT DESIGN: FreeFlow™ flared
PROFESSIONAL REFERENCE: Cinema Loudspeaker Series
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23. Non-use Periods. The power cord of
the product should be unplugged from the
outlet when left unused for long periods of
time.
24. Lightning. For added protection for this
product during a lightning storm, or when it
is left unattended and unused for long
periods of time, unplug it from the wall
outlet and disconnect the antenna or cable
system. This will prevent damage to the
product due to lightning and power-line
surges.
26. Damage Requiring Service. Unplug this
product from the wall outlet and refer
servicing to qualified service personnel
under the following conditions:
a. The power-supply cord or the plug has
been damaged; or
b. Objects have fallen, or liquid has been
spilled into, the product; or
c. The product has been exposed to rain or
water; or
27. Servicing. Do not attempt to service
this product yourself, as opening or
removing covers may expose you to
dangerous voltage or other hazards. Refer
all servicing to qualified service personnel.
28. Object and Liquid Entry. Never push
objects of any kind into this product
through openings, as they may touch
dangerous voltage points or short-out
parts that could result in a fire or electric
shock. Never spill liquid of any kind on the
product. The apparatus shall not be
exposed to dripping or splashing and no
objects filled with liquids, such as vases,
shall be placed on the apparatus.
29. Heat. The product should be situated
away from heat sources such as radiators,
heat registers, stoves or other products
(including amplifiers) that produce heat.
Avoid installation in extremely hot or cold
locations, in an area that is exposed to
direct sunlight or near heating equipment.
When positioning the product in its final
location, make certain that it has adequate
ventilation on all sides, as well as on the
top and bottom.
d. The product does not operate normally
when following the operating
25. Overloading. Do not overload wall out-
lets, extension cords, or integral conven-
ience receptacles, as this can result in a
risk of fire or electric shock.
instructions. Adjust only those controls
that are covered by the operating
instructions, as an improper adjustment
of other controls may result in damage
and will often require extensive work by
a qualified technician to restore the
product to its normal operation; or
e. The product has been dropped, or the
enclosure damaged; or
f. The product does not appear to operate
normally or exhibits a marked change in
performance.
T H A N K Y O U F O R C H O O S I N G J B L
For more than 50 years, JBL
has been involved in every
aspect of music and film
recording and reproduction,
from live performances to the
recordings you play in your
home, car or office.
We’re confident that the JBL
system you have chosen will
provide every note of enjoment
that you expected – and that
when you think about
or office, you will once again
choose JBL.
JBL Consumer Products
purchasing additional audio
equipment for your home, car
I N C L U D E D
Four satellites for left/right
front and surrounds.
One center channel speaker.
Powered subwoofer.
Two 6.1-meter (20-foot) speaker Three 12.2-meter (40-foot)
cables for connection from
receiver to subwoofer.
speaker cables for connection
from receiver to left and right
rear satellites and center
Two 4.6-meter (15-foot) speaker speaker.
cables for connection from
subwoofer to front speakers.
3
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S P E A K E R P L A C E M E N T
Front Speakers
Center Channel Speaker Subwoofer
0 – 0.6m (0 – 2 ft.)
Surround Speakers
150-180 cm
The front speakers should be
placed the same distance from
each other as they are from the
listening position. They should
be placed at about the same
height from the floor as the
listeners’ ears will be, or they
may be angled toward the
listeners.
The two surround speakers
should be placed slightly
room. However, the best
reproduction of bass will be
heard when the subwoofer is
placed in a corner along the
same wall as the front
speakers. Experiment with
subwoofer placement by
temporarily placing the
behind the listening position
and, ideally, should face each
other and be at a level higher
than the listeners’ ears. If that
is not possible, they may be
placed on a wall behind the
listening position, facing for-
ward. The surround speakers
should not call attention to
themselves. Experiment with
subwoofer in the listening
position and moving around the
room until the bass
The center channel speaker
should be placed slightly
reproduction is best. Place the
behind the front left and right
speakers, and no more than
two feet above or below the
tweeters of the left and right
speakers. It is often convenient
their placement until you hear a subwoofer in that location.
diffuse, ambient sound
accompanying the main
program material heard in the
front speakers.
to set the center speaker on top The low-frequency material
of the television set, as shown
in the drawing.
reproduced by the subwoofer is
mostly omnidirectional, and this
speaker may be placed in a
convenient location in the
4
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M O U N T I N G O P T I O N S
Satellites and Surrounds
On shelves.
On the wall. Wall brackets
are included.
On optional stands.
Wall-Mounting
The customer is responsible for
proper selection and use of
mounting hardware, available
through hardware stores, to
properly and safely wall-mount
the speakers.
5
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S P E A K E R C O N N E C T I O N S
Separate and strip the ends of
the speaker wire as shown.
Speakers and electronics
terminals have corresponding
(+) and (–) terminals. Most
manu-facturers of speakers
and electronics, including JBL,
use red to denote the (+)
terminal and black for the (–)
terminal.
the amplifier. Wiring “out of
Connection Tips
phase” results in thin sound,
weak bass and a poor stereo
image.
With the advent of multichannel
surround-sound systems,
connecting all of the speakers
in your system with the correct
polarity remains equally
important in order to preserve
The (+) lead of the speaker wire the proper ambience and
is noted with a stripe. It is
important to connect all
directionality of the program
material.
speakers identically: (+) on the
speaker to (+) on the amplifier
and (–) on the speaker to (–) on
6
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Dolby* Pro Logic* (Non-Digital) – Speaker Level
Use this installation method for
Dolby Pro Logic applications
(not Dolby Digital, DTS® or
Left Front
Right Front
Center
+
–
+
–
+
–
other digital processing),
where the receiver/processor
does not have a subwoofer
output, or a volume-controlled
preamp (line-) level output:
Connect your receiver or
amplifier’s front left and right
speaker terminals to the left
and right terminals on the
subwoofer that are marked
“High Level In.” Connect the
left and right terminals on the
subwoofer that are marked
“High Level Out” to the cor-
responding terminals on the
back of your front left and right
speakers.
Subwoofer
HIGH LEVEL
L
R
+
–
–
+
OUT
IN
Receiver
Left Front
Center
Right Front
Connect your receiver or
amplifier’s center, left and right
surround-speaker terminals to
the corresponding terminals on
the back of your center, left and
right surround speakers.
+
–
+
–
+
–
Left Surround
Right Surround
+
–
+
–
Left Surround
Right Surround
+
–
+
–
7
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Dolby Pro Logic (Non-Digital) – Line Level
Use this installation method for
Dolby Pro Logic appli-cations
(not Dolby Digital, DTS® or
preamp (line-) level output:
Use RCA-type patch cords
to connect the line-level
LFE input on the subwoofer
with Dolby Pro Logic
processors. Note: If your
receiver or amplifier only has
one subwoofer output jack,
then you will need to use a Y-
connector (not included). Plug
the male end of the Y-
connector into your receiver or
amplifier’s subwoofer output
jack, and connect each of the
two female ends to separate
RCA-type patch cords. Finally,
plug the RCA-type patch cords
into the line-level inputs on the
subwoofer.
other digital processing), where subwoofer outputs on your
the receiver/processor is
equipped with a subwoofer
output, or a volume-controlled
receiver or amplifier to the line-
level inputs on the subwoofer.
IMPORTANT: Do not use the
Center
Left Front
Right Front
+
–
+
–
Subwoofer
Line-
Level
In
L
Connect each speaker to the
corresponding speaker
R
terminals on your receiver or
amplifier.
Receiver
Left
Front
Subwoofer
Out
Right
Front
+
–
–
+
–
–
R
L
Left
Right
Rear
+
Center
Rear
+
+
–
Right Surround
Left Surround
+
–
+
–
Dolby Digital or DTS® (or Other Digital Surround Mode) Connection
RECEIVER
SUBWOOFER
LINE LEVEL IN
output or subwoofer output
on your receiver or amplifier.
Connect each speaker to the
corresponding speaker
terminals on your receiver or
amplifier.
Note:
When using the LFE input, the
subwoofer's Crossover control
is NOT active, because this
function is controlled by your
surround processor.
L
LFE INPUT
LFE OUT
R
Use this installation method for
Dolby Digital, DTS® or other
digital surround processors:
Use the line-level input jack
marked “LFE” for the Low-
Frequency Effects channel.
Connect this jack to the LFE
Make sure that you have
configured your surround-
sound processor for
“Subwoofer On.” The front left,
front right, center and rear
speakers should all be set to
“Small.”
When using the LFE input, set
the subwoofer's Volume control
to "Max" and calibrate the
subwoofer level along with the
other speakers according to
the set-up instructions in the
owner's manual for your
surround receiver/amplifier.
8
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O P E R AT I O N
P H A S E
The Phase Control determines
Press the Master Power
not sense a signal after
™
Switch (marked Power ¡) to
the ON position to use the
subwoofer. When your receiver
or amplifier is off, or is not
sending program material to
the subwoofer, the subwoofer
will be in standby mode. When
the subwoofer senses an audio
signal, it will automatically turn
itself on. If the subwoofer does
approximately twenty minutes,
it will automatically go into
standby mode. If you will be
away from home for an
extended period of time, or if
the subwoofer will not be used,
switch the Master Power
whether the subwoofer’s piston-
like action moves in and out in
phase with the main speakers or
opposite the main speakers. This is
adjusted by pressing the button to
the 0°, or 180° position. The 0°
position of the phase button plays
the bass signal in phase with the
main speakers. The 180° position
plays the bass signal 180º, or out of
phase with the main speakers.
Proper phase adjustment depends
on several variables such as
switch
¡ to the "OFF" position.
¢
¡
£
subwoofer placement and listener
position. Adjust the phase switch to
optimize bass output at the
listening position.
™
Every system, room and listener is
different. There are no right or
wrong settings. This switch offers
the added flexibility to adjust your
subwoofer for optimum
HIGH LEVEL
LINE LEVEL IN
LFE
+
–
–
+
L
R
performance for your specific
listening conditions without having
to move your speakers. If at some
time in the future you happen to
rearrange your listening room, and
move your speakers, you should
experiment with the phase switch
in both positions, and leave it in the
position that optimizes bass
OUT
IN
L
PHASE
0°
180°
R
+
IMPORTANT: CONNECT STRIPED WIRE TO RED ( ) SPEAKER TERMINAL.
AC 230V~50Hz
CAUTION
performance for your taste.
RISK OF ELECTRIC SHOCK
DO NOT OPEN
200 Watts
Volume
Crossover
Volume can be adjusted using
the Subwoofer Volume Control
£, as shown.
The crossover filter between
the subwoofer and satellites
can be adjusted using the
Crossover Control ¢. The
optimum setting for the
SCS178 system is with the
Crossover Control
the "Min" position.
¢
set to
Subwoofer
Level
Subwoofer
Level
MIN
MAX
MIN
MAX
9
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T R O U B L E S H O O T I N G
If there is no sound from any of
the speakers:
• Check that receiver/amplifier
is on and a source is playing.
• Check that the powered
subwoofer is plugged in, its
• If your receiver/processor is
set in Dolby Pro Logic mode,
make sure the center speaker
is not in phantom mode.
• If your receiver/processor
is set in Dolby Digital or DTS®
mode, make sure the
receiver/processor is con-
figured so that the center
speaker is enabled.
If there is no sound from the
surround speakers:
• Check all wires and
connections between
receiver/ amplifier and
speakers. Make sure all wires
are connected. Make sure
none of the speaker wires are
frayed, cut or punctured.
• Review proper operation of
your receiver/amplifier and its
surround-sound features.
• Make sure the movie or TV
show you are watching is
recorded in a surround-sound
mode. If it is not, check to see
if your receiver/ amplifier has
other surround modes you
may use.
Power switch
¡
is switched
on to the “ON•” position.
• Check all wires and
connections between
receiver/ amplifier and
speakers. Make sure all wires
are connected. Make sure
none of the speaker wires are
frayed, cut or punctured.
• Review proper operation of
your receiver/amplifier.
If the system plays at low
volumes but shuts off as
volume is increased:
• Check all wires and connecti-
ons between receiver/
amplifier and speakers. Make
sure all wires are connected.
Make sure none of the
speaker wires are frayed, cut
or punctured.
If there is no sound coming
from one speaker:
• In Dolby Digital or DTS®
modes, make sure your
receiver/processor is
configured so that the
surround speakers are
• Check the “Balance” control
on your receiver/amplifier.
• Check all wires and con-
nections between receiver/
amplifier and speakers. Make
sure all wires are connected.
Make sure none of the
speaker wires are frayed, cut
or punctured.
• In Dolby Digital or DTS®
modes, make sure that the
receiver/processor is
configured so that the
speaker in question is
enabled.
• If more than one pair of main
speakers is being used, check
the minimum impedance
requirements of your
enabled.
receiver/amplifier.
• Review the operation of your
DVD player and the jacket of
your DVD to make sure that
the DVD features the desired
Dolby Digital or DTS® mode,
and that you have properly
selected that mode using both
the DVD player’s menu and
the DVD disc’s menu.
If there is low (or no) bass
output:
• Make sure the connections to
the left and right “Speaker
Inputs” have the correct
polarity (+ and –).
• Make sure the subwoofer is
plugged into an active
electrical outlet.
If there is no sound from the
center speaker:
• Check all wires and
connections between
receiver/
amplifier and speaker. Make
sure all wires are connected.
Make sure none of the
speaker wires are frayed, cut
or punctured.
• Make sure the powered
subwoofer is plugged in and
switched on.
• In Dolby Digital or DTS®
modes, make sure your
receiver/processor is
configured so that the
subwoofer and LFE output are
enabled.
10
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Declaration of Conformity
We, Harman Consumer International
2, route de Tours
72500 Château-du-Loir
France
declare in own responsibility, that the product
described in this owner’s manual is in
compliance with technical standards:
EN 60065:1998
EN 55013/A14:1999
EN 55020/A14:1999
EN 61000-3-2/A14:2000
EN 61000-3-3/1.1995
EN 50081-1:1992
EN 50082-1:1992
Luc Emrd
JBL,
Harman Consumer International
France, 08/01
11
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S P E C I F I C AT I O N S
SCS178 Satellite
Frequency Response (-6dB):
Sensitivity (2.83V/1m):
Nominal Impedance:
90Hz – 22kHz
86dB
4 Ohms
Recommended Amplifier Power
Drive Units:
25 – 100 Watts RMS per Channel
12mm Polyamide/Titanium Laminate Video-shielded HF
100mm Paper Cone Video-shielded Mid/Bass
235mm x 140mm x 179mm (9.3" x 5.5" x 7")
2.8kg (6.2lb)
Dimensions (H x W x D):
Weight:
SCS178 Center
Frequency Response (-6dB):
100Hz – 22kHz
Sensitivity (2.83V/1m):
Nominal Impedance:
Recommended Amplifier Power
Drive Units:
88dB
4 Ohms
25 – 100 Watts RMS per Channel
12mm Polyamide/Titanium Laminate Video-shielded HF
Dual 100mm Paper Cone Video-shielded Mid/Bass
145mm x 402mm x 155mm (5.7" x 15.8" x 6.1")
4.5kg (9.9lb)
Dimensions (H x W x D):
Weight:
SCS178 Active Subwoofer
Low Frequency Cut-off:
35Hz
High Frequency Cut-off:
Built-in Power Amplifier:
Drive Unit:
Dimensions (H x W x D):
Weight:
40 Hz - 160Hz Variable
100 Watts RMS
200mm Paper Cone Long Throw Driver. Bass Reflex Enclosure
450mm x 250mm x 360mm (17.7" x 9.8" x 14.2")
13.6kg (30lb)
SCS178 System
Frequency Response (-6dB):
35Hz – 20kHz
Refinements may be made on occasion to existing products without notice,
but will always meet or exceed original specifications unless otherwise stated.
Simply Cinema is a registered trademark of JBL, Incorporated.
* Dolby and Pro Logic are trademarks of Dolby Laboratories.
DTS® is a registered trademark of Digital Theater Systems, Inc.
O W N E R ’ S G U I D E
P R O S O U N D
PRODUCT LINE:
C O M E S H O M E ™
®
JBL Consumer Products
250 Crossways Park Drive, Woodbury, NY 11797
Europe: 2. Route de Tours, 72500 Château du Loir, France
MODEL
NUMBER:
SCS178 (230V)
DESIGN GOAL: Bring the thrill of live performance and movie sound to the
home environment by calling on JBL’s professional engineering leadership.
SATELLITE TYPE:Titanium-laminate-dome tweeter, reflex-loaded enclosure
SUBWOOFER TYPE: Bass-reflex enclosure
©2001 JBL, Incorporated.
JBL is a registered trademark of JBL, Incorporated.
Part No.1111-SCS178
PORT DESIGN: FreeFlow™ flared
PROFESSIONAL REFERENCE: Cinema Loudspeaker Series
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