JBL Speaker SCS178 User Manual

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  
 
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
 
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
 
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
 
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
 
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
 
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
 
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
 
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  
 
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  
 
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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