P 7520 (serv.man3) - JBL Car Audio User Guide / Operation Manual. Page 4

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
subwoofer), refer to the  chart above
to determine the capacitor and
inductor values you’ll need to route
bass signals to the woofer, and
midrange and high frequencies to the
satellite speakers. These passive
crossover components will also ensure
that the impedance 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. If you are using conventional RCA

input connections and a source unit
with output voltage less than 4V,
simply plug the RCA plugs into the
RCA jacks on the amplifier.

4

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
locations of the four mounting holes.

2. Drill a small pilot hole at each marked

location.

3. Mount the amplifier and securely

tighten the mounting screws.

1. Connect the speakers, observing

proper polarity, to the speaker output
barrier strip on the amplifier using at
least 1,25 mm

2

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 connected to the P-2510 must
be at least 2 Ohms.) 

2. If you are bridging the amplifier,

connect the speaker wires to the
terminals marked “bridge” observing
proper polarity. (Note: The total
impedance of the speaker system to
be connected to the amplifier must be
at least 4 Ohms in bridge mode)

FREQUENCY

INDUCTOR

CAPACITOR

Crossover 

6dB/oct. LP

6dB/oct. HP

(4 ohm)

(4 ohm)

75Hz

8.0mH

530µF

100Hz

6.4mH

400µF

125Hz

5.0mH

318µF

150Hz

4.2mH

265µF

175Hz

3.6mH

227µF

200Hz

3.2mH

198µF

40

Refer to Figures 1-6 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 2.5 mm

2

) to the

Gnd terminal and connect the other
end to the nearest bare-metal chassis
component. Then, connect a red wire
(at least 2.5 mm

2

) from the vehicle’s

+12-volt battery terminal to the +Batt
terminal on the barrier strip. Finally
connect a blue wire (1,25 mm

2

) 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 instruction
regarding the Rem terminal.