JBL Car Amplifier P 2510 User Manual

Power Series Amplifiers  
P-7520, P-7540, P-2510 Owner’s Manual  
GENUINE JBL  
 
P-7540  
6
P-7520  
4
5
4
5
6
MADE IN THE U.S.A.  
MADE IN THE U.S.A.  
SPEAKER OUTPUTS  
BRIDGE  
SPEAKER OUTPUTS  
POWER  
REM  
BRIDGE  
+–  
POWER  
REM  
FRONT  
FUSE  
30A  
FUSE  
30A  
USE  
30A  
L
R
+
L
R
+
+BATT  
ND  
+BATT  
GND  
REAR  
BRIDGE  
2
2
3
1
1
3
Always wear protective eyewear when  
using tools.  
When routing cables, keep input signal  
cables away from power cables and  
speaker wires.  
SPKR LEVEL IN  
R  
LINE LEVEL  
INPUT  
LINE LEVEL  
INPUT  
AUX  
OUT  
AUX  
OUT  
SPEAKEVEL IN  
+R–  
–L+  
FRONT  
REAR  
+
R
+
L
L
L
L
L
+R–  
–L+  
FRONT  
R
R
R
R
When making connections, make sure  
that each connection is clean, insulated  
and properly secured. Observe the  
polarity markings on the rear panel.  
Refer to the application drawings to set  
up the amplifier for operation in stereo,  
bridged-mono, bi-amp or tri-mode con-  
figurations.  
8
10  
8
12  
7
9
12  
11  
8
FRONT  
XOVER  
FLAT HP LP  
REAR  
XOVER  
FLAT HP LP  
PRE OUT  
F+R REAR FRT  
FLAT LP LP  
2V  
80Hz  
FRE
2V  
XOVER 80Hz  
AMP  
80Hz XOVER  
AMP  
2V  
INPUT MODE  
MO ST  
XOVER  
LP FLAT  
INPUT MODE  
MO ST  
INPUT  
FRT REAR  
INPUT MODE  
ST MO  
PRE OUT  
LP HFLAT  
4V  
.250V  
32Hz  
320Hz  
6V  
.250V  
LEVEL  
32Hz  
320Hz  
32Hz  
320Hz  
4V  
.250V  
LEVEL  
LEVEL  
If the amplifiers fuse must be replaced,  
use only the same rating and type as a  
replacement. Do not substitute another  
kind.  
11  
9
11  
12  
7
7
3. Pre-amp Level Output Connector –  
Connects to other amps or processors  
in the signal chain.  
Controls and Connectors  
1. Pre-amp Level Input Connector –  
Connects to line-level output from the  
source unit.  
2. Universal Interface Speaker Level  
Connector – Connects to speaker-level  
output from the source unit. Provides  
Common Sense amplifier turn-on  
when used with factory radios  
(2-channel on P-7520, 4-channel on  
P-7540).  
8. Input Sensitivity Control – Adjusts  
input sensitivity for pre-amp level and  
speaker-level inputs.  
4. Speaker-Output Connector – (2-chan-  
nel on P-7520, 4-channel on P-7540).  
5. Fuses P-7520: 30A ATC type, P-7540:  
30A ATC type x 2, P-2510: 40A ATC  
type.  
6. Power Connector – Connection for  
12V+, Gnd and Rem.  
7. Input-Mode Switch – Sums left and  
right inputs.  
9. Pre-amp Output Selector Switch –  
Selects input path for pre-amp output.  
Output can be summed from front and  
rear inputs with no filter, or filtered by  
the front or rear crossover.  
10. Rear-Channel Input Selector – Selects  
rear-channel input between front input  
and rear input.  
11. Crossover Selector – Determines  
whether the crossover is a High-Pass  
filter (HP), Low-Pass filter (LP) or  
unfiltered (flat).  
12. Crossover Frequency Control –  
Determines the crossover frequency  
for the amplifier channels (front or  
rear) and the pre-amp outputs.  
3
 
P-2510  
6
4
2
5
1
FREQUENCY INDUCTOR CAPACITOR  
Crossover 6dB/oct. LP 6dB/oct. HP  
MADE IN THE U.S.A.  
(4 ohm)  
(4 ohm)  
UNIVERSAL IRFACE  
REA
LINE LEVEL  
INPUT  
SPEAKER OUTPUTS  
POWER  
REM  
+
R
L
+
FRONT  
REAR  
FUSE  
40A  
+
+
+
BATT  
GND  
75Hz  
100Hz  
125Hz  
150Hz  
175Hz  
200Hz  
8.0mH  
6.4mH  
5.0mH  
4.2mH  
3.6mH  
3.2mH  
530µF  
400µF  
318µF  
265µF  
227µF  
198µF  
L
+
R
L
+
FRONT  
R
12  
8
2V  
80Hz  
FREQ  
4V  
.250V  
32Hz  
320Hz  
LEVEL  
Wiring the Power Connections  
Refer to diagrams on pages 3 and 4 for  
connector locations.  
1. For power, remote and speaker wires,  
strip 1⁄4" off one end of each jacket to  
reveal bare wire for insertion into the  
barrier strip connectors.  
2. Locate the 3-connection barrier strip  
labeled +Batt, Rem and Gnd. Connect a  
black wire (at least 10G) to the Gnd ter-  
minal and connect the other end to the  
nearest bare-metal chassis component.  
Then, connect a red wire (at least 10G)  
from the vehicles +12-volt battery  
terminal to the +Batt terminal on the  
barrier strip. Finally, connect a blue  
wire (16G) to the Rem terminal on the  
barrier strip and connect the other end  
to the Rem output of the source unit.  
If you are using speaker-level inputs  
and speaker-level outputs from the  
source, disregard the previous instruc-  
tion regarding the Rem terminal.  
Wiring the Speaker Output  
Connections  
3. If you are running either the P-7520 or  
the P-7540 in tri-mode (stereo and  
mono simultaneously to one or two  
pairs of satellite speakers and a sub-  
woofer), refer to the chart above to  
determine the capacitor and inductor  
values you’ll need to route bass sig-  
nals to the woofer, and midrange and  
high frequencies to the satellite speak-  
ers.These passive-crossover compo-  
nents will also ensure that the imped-  
ance of the speaker system doesn’t  
drop below 2 ohms.The P-2510 should  
be used to drive woofers only as its  
bandwidth is limited to 20Hz – 320Hz.  
1. Connect the speakers, observing prop-  
er polarity, to the speaker-output barri-  
er strip on the amplifier using at least  
16G high-quality speaker wire. (Note:  
The total impedance of the speakers  
connected to the outputs when the  
amp is driven in stereo must be at  
least 2 ohms. Because the P-2510 is a  
single-channel amplifier, the speaker  
connections on the barrier strip are  
wired in parallel inside the amp.The  
total impedance of the speakers con-  
nected to the P-2510 must be at least 2  
ohms.)  
2. If you are bridging the amplifier, con-  
nect the speaker wires to the termi-  
nals marked “bridge,” observing prop-  
er polarity. (Note:The total impedance  
of the speaker system to be connected  
to the amplifier must be at least 4  
ohms in bridge mode.)  
Mounting the Amplifier  
The JBL P-7520, P-7540 or P-2510 can be  
mounted in virtually any location inside  
the vehicle. However, make sure to keep  
the amplifier away from heater vents or  
ducts.  
1. At the chosen site, use the amplifier as  
a mounting template and mark the  
locations of the four mounting holes.  
2. Drill a small pilot hole at each marked  
location.  
Wiring the Input Connections  
1. If you are using conventional RCA  
input connections and a source unit  
with output voltage less than 4V, sim-  
ply plug the RCA plugs into the RCA  
jacks on the amplifier.  
3. Mount the amplifier and securely  
tighten the mounting screws.  
4
 
2. If you are connecting the amplifier to  
a factory-installed source unit, or to a  
source unit that only has speaker-level  
outputs, connect the speaker outputs  
of the source to the speaker inputs on  
the amp, observing the following  
color-code:  
Front Left+: White  
Front Left–: White with black stripe  
Front Right+: Gray  
4. In some systems it may be desirable  
to have two sources play simultane-  
ously through the audio system.  
For instance, if you have a factory-  
installed radio in your car and you  
want to add an aftermarket CD player,  
you may connect the CD player to the  
RCA inputs of the amp, and the facto-  
ry radio to the Universal Interface  
speaker inputs. (Note: Front and rear  
channels of the CD and radio must be  
driven into the front and rear inputs of  
the amplifier. UseY adapters if neces-  
sary.) The Universal Interface circuitry  
will isolate the two signals from each  
other while allowing them to drive the  
amp simultaneously.Therefore,  
switching from one source to the  
other is as simple as turning the  
unused source off and the other on.  
(Note:You must connect the remote  
turn-on wire from the CD player to the  
Rem terminal on the amp. Install a  
diode in the remote line from the CD  
player as shown in the diagram on  
this page.)  
quency is variable from 32Hz – 320Hz.  
From  
Source  
Unit  
IN4001 Diode  
To  
Amp  
Pre-amp Outputs  
Connect these to the input connectors of  
other amplifiers or processors in your  
system.  
Initially, turn the input sensitivity GAIN  
control to its minimum (counterclock-  
wise) position (refer to Figure 9).  
1. Reconnect the (–) negative lead to  
your vehicles battery. Apply power to  
the audio system and play a favorite  
music track from CD or tape. (Note:  
After the source unit is on, the JBL  
badge (on the top panel) will illumi-  
nate, indicating the amplifier is on. If  
not, check the wiring, especially the  
remote connection from the source  
unit. Also refer to “Troubleshooting”  
on the next page.)  
2. On the source unit, increase the  
volume control until it is approxi-  
mately 3/4 of its maximum output  
level. Slowly increase the Input  
Sensitivity control (clockwise)  
towards three o’clock and, at the  
same time, listen to the quality of the  
reproduced sound. At some point,  
you’ll hear distortion on the music  
peaks. Stop the adjustment and turn  
it back slightly.This is the maximum  
undistorted output level of your sys-  
tem, and it should not be exceeded  
during use.  
The crossover-selector switch determines  
which filter will be assigned to the pre-  
amp outputs.The pre-amp outputs may  
be High Pass (switch set to HP), Low Pass  
(switch set to LP) or unfiltered (switch set  
to Flat).The crossover-frequency is deter-  
mined by the crossover frequency control  
and will be the same frequency as the  
amplifier channels affected by that con-  
trol.  
Front Right–: Gray with black stripe  
Rear Left+: Green  
Rear Left–: Green with black stripe  
Rear Right+: Purple  
Rear Right–: Purple with black stripe  
(Note: When using the Universal  
Interface speaker-level inputs and  
speaker-level outputs, the Rem termi-  
nal on the amplifier may be used as a  
remote output connection and will  
provide power to turn on other ampli-  
fiers and processors in the system.)  
(Note:The front and rear inputs on the  
P-2510 are summed to mono inside the  
amp, and will provide constant bass  
regardless of the position of source  
unit balance and fader controls.)  
3. If you are connecting your Power  
Series amplifier to a source unit with  
output voltage higher than 4V, connect  
the output signal wires of the source  
unit to the Universal Interface speaker  
inputs. Because the inputs have an  
impedance of 10K ohms, this connec-  
tion will provide the best noise-free  
performance possible.  
Refer to the Applications” section for  
system expansion possibilities.  
Setting Input Sensitivity  
Proper input-sensitivity control settings  
on Power Series amplifiers are critical to  
ensure optimum performance, low noise  
levels and maximum system reliability.  
As a general rule, controls at the front  
end of a system (source, equalizers and  
other processors) should be set as high  
as possible with the amplifier input sensi-  
tivity set as low as possible while still  
providing adequate volume levels. Using  
a high signal level and a low sensitivity  
setting will help keep background noise  
in the system to a minimum.  
System Setup and Adjustment  
Electronic Crossover  
The electronic crossover in the P-7520,  
P-7540 and P-2510 should be used to  
route the appropriate signal to speakers  
intended to play only bass, midbass or  
midrange and treble frequencies.The  
crossover slope is 12dB/oct and the fre-  
5
 
Figure 1.This wiring diagram shows a  
JBL P-7520 amplifier set to stereo to  
drive a pair of full-range speakers.  
Figure 5. In this expanded system, a JBL  
P-7540 drives two pairs of 5-1/4" 2-way  
speakers.The JBL P-7540s pre-amp out-  
puts feed a JBL P-2510, which drives a  
single 12" subwoofer.  
MADE IN THE U.S.A.  
MADE IN THE U.S.A.  
SPEAKER OUTPUTS  
SPEAKER OUTPUTS  
BRIDGE  
+–  
POWER  
REM  
FUSE  
30A  
POWER  
REM  
L
R
+
+BATT  
GND  
FUSE  
40A  
+
+
+BATT  
GND  
2V  
80Hz  
FREQ  
INPUT MODE  
MO ST  
XOVER  
LP HP FLAT  
PRE OUT  
LP HP FLAT  
2V  
80Hz  
FREQ  
SPKR LEVEL IN  
REAR  
LINE LEVEL  
INPUT  
AUX  
OUT  
+R–  
–L+  
FRONT  
REAR  
4V  
.250V  
32Hz  
320Hz  
LEVEL  
4V  
.250V  
32Hz  
320Hz  
L
L
LEVEL  
+R–  
–L+  
FRONT  
R
R
MADE IN THE U.S.A.  
7
SPEAKER OUTPUTS  
BRIDGE  
+–  
Figure 2.This wiring diagram shows a  
JBL P-7520 amplifier set to bridge mode  
(mono) to drive a single subwoofer or a  
pair of subwoofers (P-7540).  
POWER  
REM  
MADE IN THE U.S.A.  
+
FUSE  
30A  
L
R
+
+BATT  
GND  
SPEAKER OUTPUTS  
BRIDGE  
POWER  
REM  
FRONT  
FUSE  
30A  
FUSE  
30A  
L
+
R
+
BATT  
GND  
UNIVERSAL INTERFACE  
REAR  
LINE LEVEL  
INPUT  
+
R
L
+
FRONT  
REAR  
L
+
R
L
+
REAR  
BRIDGE  
FRONT  
R
2V  
80Hz  
INPUT MODE  
MO ST  
XOVER  
LP HP FLAT  
PRE OUT  
LP HP FLAT  
4V  
.250V  
32Hz  
320Hz  
FREQ  
LEVEL  
FRONT  
XOVER  
FLAT HP LP  
REAR  
XOVER  
FLAT HP LP  
PRE OUT  
F+R REAR FRT  
FLAT LP LP  
2V  
XOVER 80Hz  
AMP  
80Hz XOVER  
AMP  
2V  
INPUT MODE  
MO ST  
INPUT  
FRT REAR  
INPUT MODE  
ST MO  
6V  
.250V  
32Hz  
320Hz  
32Hz  
320Hz  
4V  
.250V  
LEVEL  
LEVEL  
Figure 3.This wiring diagram shows a  
JBL P-7520 amplifier set for tri-mode  
operation. For a desired crossover fre-  
quency, use the chart on page 4 to select  
an inductor for the subwoofer, and cor-  
responding capacitors for left and right  
speakers.  
MADE IN THE U.S.A.  
SPEAKER OUTPUTS  
BRIDGE  
+–  
POWER  
REM  
FUSE  
30A  
L
R
+
+BATT  
GND  
2V  
80Hz  
INPUT MODE  
MO ST  
XOVER  
LP HP FLAT  
PRE OUT  
LP HP FLAT  
Applications  
3. After adjusting the level of the main  
speakers in your system, you should  
adjust the remaining channels (if you  
4V  
.250V  
32Hz  
320Hz  
FREQ  
LEVEL  
For your convenience, we’ve included  
several application diagrams to help  
you plan your own system installation.  
Figures 1 through 4 show how to con-  
figure the JBL P-7520, P-7540 or P-2510  
for stereo, bridged-mono and tri-mode  
operation.  
are using a P-7540 or a multi-amp sys-  
tem) for the desired system balance.  
You’ll find this easiest to do by adjust-  
ing the channels in the following  
order: 1) front speakers, 2) rear speak-  
ers, 3) subwoofer. Elaborate, multi-  
channel systems may be complex to  
adjust.Your local JBL installation spe-  
cialist is the best person to help with  
such an adjustment.  
Figure 4. In this example system, the  
front channels of a JBL P-7540 drive  
a pair of 5-1/4" speakers.The JBL P-7540s  
rear channels are bridged to drive a  
single 12" subwoofer.  
MADE IN THE U.S.A.  
+
SPEAKER OUTPUTS  
BRIDGE  
POWER  
REM  
FRONT  
FUSE  
30A  
FUSE  
30A  
L
+
R
+
BATT  
GND  
For system expansion ideas, see Figure  
5 on the previous page. (Note: For sim-  
plicity, Figures 1 through 5 do not show  
power, remote and input connections.)  
REAR  
BRIDGE  
FRONT  
XOVER  
FLAT HP LP  
REAR  
XOVER  
FLAT HP LP  
PRE OUT  
2V  
XOVER 80Hz  
AMP  
80Hz XOVER  
AMP  
2V  
INPUT MODE  
MO ST  
F+R REAR FRT  
FLAT LP LP  
INPUT  
FRT REAR  
INPUT MODE  
ST MO  
6V  
.250V  
32Hz  
320Hz  
32Hz  
320Hz  
4V  
.250V  
LEVEL  
LEVEL  
6
 
Symptom  
Likely Cause  
Solution  
No audio  
Low/no remote on voltage  
Check connections; turn-test turn-on voltage  
Speakers are not connected  
or are blown  
Check wiring; use VOM/DVM to  
measure speaker-coil resistance  
Many different system configurations are  
possible using the crossovers and pre-  
amp outputs featured in Power Series  
amplifiers. If you are considering  
expanding you system beyond what is  
shown here, please consult your local  
JBL installation specialist, who is experi-  
enced in designing complex mobile-  
audio systems.  
Distorted audio  
Input sensitivity is not set properly  
See Setting Input Sensitivity on page 5  
Audio lacks “punch”  
Speakers are wired with wrong polarity  
Check polarity of connections;  
refer to Applications  
Audio cycles off and on;  
amber protection LED  
(JBL badge on top panel)  
is flashing  
A protection circuit is turning the  
amplifier off and on  
Verify the following: off electrical system is  
between 5 ~ 18 Vdc; temperature is not  
over 194°F (90°C); there are no short circuits;  
speaker loads are not less than 2 ohms  
(4 ohms in mono)  
Troubleshooting  
Audio cycles off and on; amber  
protection LED (on top panel)  
is flashing  
GAIN is set too high  
(see previous page)  
Set Input Sensitivity correctly  
Use the following guide to identify  
symptoms and solve problems. Make  
sure the vehicles electrical system is  
working properly and power is reaching  
the amplifier.  
Fuse blows  
Incorrect wiring or short circuit  
Check connections; refer to Applications  
7
 
Specifications  
P-7520, P-7540, P-2510  
Specifications  
JBL P-7520  
JBL P-7540  
4 x 75 watts  
4 x 100 watts  
2 x 200 watts  
20Hz ~ 20kHz +0dB, –1dB  
250mV ~ 4V  
0.05 %  
JBL P-2510  
Declaration of Conformity  
Power Output, 4 ohms:  
Power Output, 2 ohms:  
2 x 75 watts  
2 x 100 watts  
1 x 250 watts  
1 x 375 watts  
Power Output, Bridged 4 ohms: 200 watts  
We, JBL Europe A/S  
Frequency Response:  
Input Sensitivity:  
20Hz ~ 20kHz +0dB, –1dB  
20Hz ~ 320Hz +0dB, –1dB  
Kongevejen 194B  
DK-3460 Birkerød  
DENMARK  
250mV ~ 4V  
0.05 %  
250mV ~ 4V  
0.1 %  
THD + Noise (4 ohms):  
Signal-to-Noise:  
declare in own responsibility, that the products described  
in this owner’s manual are in compliance with technical  
standards:  
>100dB  
35A  
>100dB  
>100dB  
41A  
Maximum Current Draw:  
Dimensions (w x h x l):  
64A  
EN 55013/A12/8.1994  
EN 55020/12.1994  
13-5/8" x 2-1/4" x 8-3/4"  
347 x 58 x 223mm  
21-5/8" x 2-1/4" x 8-3/4"  
550 x 58 x 223mm  
7-5/8" x 2-1/4" x 8-3/4"  
194 x 58 x 223mm  
Steen Michaelsen  
JBL Europe A/S  
Birkerød. DENMARK. 3/98  
JBL Consumer Products  
250 Crossways Park Drive  
Woodbury, NY 11797  
Part No. SH1124  
Made in USA  
 

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