JBL Home Theater System SCS 188 User Manual

+ 0 + Y 0 M  
O W N E R ’ S G U I D E  
PRODUCT LINE:  
®
MODEL  
NUMBER:  
SCS 178 and SCS 188 (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  
 
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  
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 back  
speaker (in SCS 188 only)  
should be placed behind the  
listening position, facing the  
center speaker. The surround  
speakers should not call  
The low-frequency material  
reproduced by the subwoofer is  
mostly omnidirectional, and this  
speaker may be placed in a  
convenient location in the  
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  
subwoofer in the listening  
position and moving around the  
room until the bass  
The center channel speaker  
should be placed slightly  
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  
attention to themselves.  
Experiment with their  
reproduction is best. Place the  
subwoofer in that location.  
to set the center speaker on top placement until you hear a  
of the television set, as shown  
in the drawing.  
diffuse, ambient sound  
accompanying the main  
program material heard in the  
front speakers.  
3
 
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.  
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  
phase” results in thin sound,  
weak bass and a poor stereo  
image.  
Connection Tips  
terminals have corresponding  
(+) and (–) terminals. Most  
manufacturers of speakers and  
electronics, including JBL, use  
red to denote the (+) terminal  
and black for the (–) terminal.  
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  
the amplifier. Wiring “out of  
4
 
Dolby* Pro Logic* (Non-Digital) – Speaker Level (SCS 178 only)  
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  
Surround Back  
Right Surround  
+
+
+
Left Surround  
Surround Back  
Right Surround  
+
+
+
Only in 6.1 systems  
5
 
Dolby Pro Logic (Non-Digital) – Line Level (SCS 178 and SCS 188)  
Use this installation method for  
Dolby Pro Logic appli-cations  
(not Dolby Digital, DTS® or  
output, or a volume-controlled  
preamp (line-) level output:  
Use RCA-type patch cords  
level inputs on the subwoofer.  
IMPORTANT: Do not use the  
LFE input on the subwoofer  
with Dolby Pro Logic  
other digital processing), where to connect the line-level  
the receiver/processor is  
equipped with a subwoofer  
subwoofer outputs on your  
receiver or amplifier to the line-  
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-  
Center  
Left Front  
Right Front  
+
+
+
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.  
Connect each speaker to the  
corresponding speaker  
terminals on your receiver or  
amplifier.  
Subwoofer  
Line-  
Level In  
L
R
Receiver  
Left  
Front  
Subwoofer  
Out  
Right  
Front  
+
+
R
L
+
Center  
Surround Back  
Left  
Surround  
Right  
Surround  
+
+
+
Right Surround  
Left Surround  
Surround Back  
+
+
+
Only in 6.1 systems  
Dolby Digital or DTS® (or Other Digital Surround Mode) Connection  
(SCS 178 and SCS 188)  
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.  
Make sure that you have  
configured your surround-  
sound processor for  
“Subwoofer On.” The surround  
receiver should be configured  
for 6.1-channel operation  
(if available) and the front left,  
front right, center and rear  
speakers should all be set to  
“Small.”  
If your receiver allows you to  
set the crossover frequency  
between the subwoofer and the  
main speakers, select either  
120Hz or 150Hz, or select the  
setting that is the closest  
frequency below these.  
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  
6
 
O P E R AT I O N  
P H A S E  
determines  
Press the Master Power 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 not sense a  
signal after approximately  
twenty minutes, it will  
The Phase Control  
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  
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 switch  
position.  
¡
to the "OFF"  
depends on several variables  
such as 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 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  
¢
¡
£
HIGH LEVEL  
LINE LEVEL IN  
LFE  
+
+
L
R
OUT  
IN  
L
PHASE  
0°  
180°  
R
+
IMPORTANT: CONNECT STRIPED WIRE TO RED ( ) SPEAKER TERMINAL.  
experiment with the phase  
switch in both positions, and  
leave it in the position that  
AC 230V~50Hz  
200 Watts  
CAUTION  
RISK OF ELECTRIC SHOCK  
DO NOT OPEN  
optimizes bass performance for  
your taste.  
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  
SCS 178 and SCS 188 system is  
with the Crossover Control  
set to the "Min" position.  
¢
Subwoofer  
Level  
Subwoofer  
Level  
MIN  
MAX  
MIN  
MAX  
7
 
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.  
8
 
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  
Gary Mardell  
JBL,  
Harman Consumer International  
France,09/03  
9
 
S P E C I F I C AT I O N S  
SCS 178/SCS 188 Satellite and Surround Back  
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:  
SCS 178 and SCS 188 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:  
SCS 178 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)  
SCS 178 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:  
SCS 178 and SCS 188  
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.406-000-01570  
PORT DESIGN: FreeFlow™ flared  
PROFESSIONAL REFERENCE: Cinema Loudspeaker Series  
 

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