JBL CS50 4 User Manual

car audio  
power amplifier  
owner’s manual  
THANK YOU  
for purchasing a JBL CS Series amplifier.  
In order that we may better serve you should you require  
warranty service for your new amplifier, please retain your  
original purchase receipt and return the enclosed warranty  
registration card.  
APPLICATIONS – CS200.1  
The CS subwoofer amplifiers are  
single-channel amplifiers. There are  
two sets of terminals to make it easy  
to connect multiple woofers. Either  
set of (+/–) terminals may be used when  
connecting woofers.  
To the right are two application  
diagrams to help plan your subwoofer  
system installation. Figures 2 and 3  
show how to configure the CS200.1  
subwoofer amplifiers.  
NOTE: For simplicity, Figures 2 and 3  
do not show power, remote and input  
connections.  
Figure 2. CS subwoofer amplifier with two  
woofer connections.  
Figure 3. CS subwoofer amplifier with one woofer  
connection.  
NOTE: Minimum speaker load is  
2 ohms.  
APPLICATIONS – CS50.4  
The CS50.4 can be set up for stereo  
4-channel, 3-channel or bridged  
2-channel operation, as shown in  
Figures 4 through 6.  
NOTE: For simplicity, Figures 4 through 6 do  
not show power, remote and input  
connections.  
NOTE: Minimum speaker impedance for  
stereo operation is 2 ohms.  
Minimum speaker impedance for bridged  
operation is 4 ohms.  
Figure 4. CS50.4 amplifier in 4-channel (stereo)  
operation to drive front and rear full-range speakers.  
Figure 5. CS50.4 is set up for 3-channel operation to  
drive a set of full-range speakers and a subwoofer.  
Figure 6. CS50.4 used in bridged 2-channel mode  
to drive a set of components or subwoofers.  
Set crossovers according to application.  
3
CONTROLS AND SETUP  
SPECIFICATIONS  
Declaration of Conformity  
SETTING THE  
SETTING INPUT  
CS200.1  
CROSSOVER(S)  
SENSITIVITY  
• 1 x 236W RMS channel at 4 ohms and 1% THD + N  
• Signal-to-noise ratio: 100dBA (reference 1W into 4 ohms)  
• 1 x 338W RMS channel at 2 ohms, 14.4V supply and  
Determine your system plans and set the  
crossover mode switch accordingly. If  
you plan to use the CS50.4 to drive full-  
range speakers, set the crossover mode  
to FLAT and skip to “Setting Input Sensi-  
tivity.”  
1. Initially turn the INPUT LEVEL control(s)  
to minimum (counter clockwise).  
2. Reconnect the (–) negative lead to the  
vehicle’s battery. Apply power to the  
audio system and play a dynamic music  
track.  
3. On the source unit, increase the vol-  
ume control to 3/4 volume. Slowly  
increase the INPUT LEVEL control(s)  
toward three o’clock until you hear  
slight distortion  
1% THD + N  
We, Harman Consumer International  
2, route de Tours  
• Dynamic power: 464W at 2 ohms  
• Effective damping factor: 6.395 at 4 ohms  
• Frequency response: 10Hz – 302Hz (–3dB)  
• Maximum input signal: 7.5V  
• Maximum sensitivity: 260mV  
• Output regulation: .073dB at 4 ohms  
• Dimensions (L x W x H): 295x313x60mm  
(11-5/8" x 12-5/16" x 2-3/8")  
• Fuses: 20A x 2  
72500 Chateau-du-Loir  
France  
declare in own responsibility that the product  
described in this owner’s manual is in compliance  
with technical standards:  
Initially set the crossover frequency  
control midway. While listening to music,  
adjust the crossover for the least per-  
ceived distortion from the speakers,  
allowing them to reproduce as much bass  
as possible.  
EN 55013:2001  
EN 55020:2002  
in the music. Then reduce the INPUT  
LEVEL slightly until distortion is no  
longer heard.  
Emmanuel Millot  
Harman Consumer International  
Chateau-du-Loir, France 1/04  
Systems using a separate subwoofer set  
the crossover mode to HP (high pass) for  
your full-range speakers. Adjust the  
crossover frequency to limit bass and  
provide increased system volume with  
less distortion.  
CS50.4  
NOTE: After the source unit is on, blue  
LEDs (on the top panel) will light, indicat-  
ing the amplifier is on. If not, check the  
wiring, especially the remote connection  
from the source unit. Also refer to  
• 4 x 67W RMS channels at 4 ohms and 1% THD + N  
• Signal-to-noise ratio: 86dBA (reference 1W into 4 ohms)  
• 4 x 82W RMS channels at 2 ohms, 14.4V supply and  
1% THD + N  
JBL Consumer Products  
250 Crossways Park Drive,  
Woodbury, NY 11797 USA  
“Troubleshooting” guide below.  
• 2 x 162W RMS channels at 4 ohms, 14.4V supply and  
1% THD + N  
• Dynamic power: 145W at 2 ohms  
• Effective damping factor: 6.395 at 4 ohms  
• Frequency response: 10Hz – 27kHz (–3dB)  
• Maximum input signal: 6V  
For subwoofers, choose the highest  
frequency that removes vocal information  
from the sound of the subwoofer.  
© 2004 Harman International Indus-  
tries, Incorporated  
If using the CS50.4 to drive a  
subwoofer(s), set the crossover mode to  
LP (low pass).  
JBL and Grand Touring are registered  
trademarks of Harman International  
Industries, Incorporated.  
• Maximum sensitivity: 240mV  
• Output regulation: .032dB at 4 ohms  
Part No. CSAMPOM3/04  
• Dimensions (L x W x H): 384x313x60mm  
(15-1/8" x 12-5/16" x 2-3/8")  
• Fuses: 25A x 2  
TROUBLESHOOTING  
SYMPTOM  
LIKELY CAUSE  
SOLUTION  
SYMPTOM  
LIKELY CAUSE  
SOLUTION  
No audio  
(POWER LED  
are off)  
No voltage at BATT+  
or REM terminals,  
or bad or no ground  
connection  
Amplifier is  
overheated  
Check voltages at  
amplifier terminals  
with VOM  
No audio  
(POWER  
LEDs flash)  
Voltage less than 9V on  
BATT+ connection  
Check vehicle  
charging system  
DC voltage on  
amplifier output  
Amplifier may need  
service; see enclosed  
warranty card for  
service information  
Check INPUT  
LEVEL setting; or  
check speaker wires  
for shorts or grounds  
No audio  
(POWER  
Make sure amplifier  
cooling is not blocked  
at mounting location;  
verify speaker system  
impedance is within  
specified limits  
LEDs are on)  
Distorted audio  
Input sensitivity is  
not set properly, or  
amplifier or source  
unit is defective  
Voltage more than 16V  
or less than 8.5V on  
BATT+ connection  
Check vehicle  
charging system  
Distorted audio  
and POWER  
LED flash  
Short circuit in  
speaker or wire  
Remove speaker leads  
one at a time to locate  
shorted speaker or  
wire, then repair  
Check speaker  
connections for proper polarity  
Features, specifications and appearance  
are subject to change without notice.  
Music lacks  
“punch”  
Speakers are not  
connected properly  

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