6
7
+R–
+R–
–L+
–L+
AUX
OUT
R
L
R
L
FRONT
FRONT
REAR
LINE LEVEL
INPUT
SPKR LEVEL IN
REAR
+ R –
+ R –
– L +
– L +
R
L
FRONT
FRONT
REAR
LINE LEVEL
INPUT
UNIVERSAL INTERFACE
REAR
3. After adjusting the level of the main
speakers in your system, you should
adjust the remaining channels (if you
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.
Applications
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.
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.)
30
– R +
– L +
+BATT
REM
GND
FUSE
30A
MADE IN THE U.S.A.
BRIDGE
SPEAKER OUTPUTS
POWER
PRE OUT
LEVEL
INPUT MODE
MO ST
4V
.250V
XOVER
FLAT
HP
LP
FLAT
HP
LP
2V
FREQ
32Hz
320Hz
80Hz
30
– R +
– L +
+BATT
REM
GND
FUSE
30A
MADE IN THE U.S.A.
BRIDGE
SPEAKER OUTPUTS
POWER
PRE OUT
LEVEL
INPUT MODE
MO ST
4V
.250V
XOVER
FLAT
HP
LP
FLAT
HP
LP
2V
FREQ
32Hz
320Hz
80Hz
30
– R +
– L +
+BATT
REM
GND
FUSE
30A
MADE IN THE U.S.A.
BRIDGE
SPEAKER OUTPUTS
POWER
PRE OUT
LEVEL
INPUT MODE
MO ST
4V
.250V
XOVER
FLAT
HP
LP
FLAT
HP
LP
2V
FREQ
32Hz
320Hz
80Hz
Figure 1.
This wiring diagram shows a
JBL P-7520 amplifier set to stereo to
drive a pair of full-range speakers.
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).
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.
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-7540’s
rear channels are bridged to drive a
single 12" subwoofer.
ST MO
INPUT MODE
LEVEL
INPUT
PRE OUT
LEVEL
INPUT MODE
MO ST
6V
.250V
4V
.250V
FRONT
F+R
FLAT
REAR
LP
FRT
LP
FRT
REAR
REAR
XOVER
FLAT HP LP
XOVER
FLAT HP
LP
XOVER
AMP
XOVER
AMP
32Hz
80Hz
320Hz
32Hz
80Hz
2V
2V
320Hz
FUSE
30A
BRIDGE
– R +
– L +
MADE IN THE U.S.A.
+BATT
REM
GND
BRIDGE
SPEAKER OUTPUTS
POWER
FRONT
REAR
30
FUSE
30A
30
40
+ +
– –
MADE IN THE U.S.A.
SPEAKER OUTPUTS
FUSE
40A
+BATT
REM
GND
POWER
Figure 5
. In this expanded system, a JBL
P-7540 drives two pairs of 5-1/4" 2-way
speakers. The JBL P-7540’s pre-amp out-
puts feed a JBL P-2510, which drives a
single 12" subwoofer.
LEVEL
FREQ
4V
.250V
32Hz
80Hz
320Hz
2V
FUSE
30A
BRIDGE
– R +
– L +
MADE IN THE U.S.A.
+BATT
REM
GND
BRIDGE
SPEAKER OUTPUTS
POWER
FRONT
REAR
30
FUSE
30A
30
ST MO
INPUT MODE
LEVEL
INPUT
PRE OUT
LEVEL
INPUT MODE
MO ST
6V
.250V
4V
.250V
FRONT
F+R
FLAT
REAR
LP
FRT
LP
FRT
REAR
REAR
XOVER
FLAT HP LP
XOVER
FLAT HP
LP
XOVER
AMP
XOVER
AMP
32Hz
80Hz
320Hz
32Hz
80Hz
2V
2V
320Hz
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