JBL P 4040 (serv.man8) User Manual / Operation Manual ▷ View online
F U S E
3 0 A
B R I D G E
– R +
– L +
MADE IN THE U.S.A.
+BATT
REM
GND
BRIDGE
SPEAKER OUTPUTS
POWER
FRONT
REAR
30
6
20
–
R
+
–
L
+
+BATT
REM
GND
BRIDGE
SPEAKER OUTPUTS
POWER
FUSE
20A
MADE IN THE U.S.A.
F U S E
3 0 A
B R I D G E
– R +
– L +
MADE IN THE U.S.A.
+BATT
REM
GND
BRIDGE
SPEAKER OUTPUTS
POWER
FRONT
REAR
30
20
–
R
+
–
L
+
+BATT
REM
GND
BRIDGE
SPEAKER OUTPUTS
POWER
FUSE
20A
MADE IN THE U.S.A.
LEVEL
INPUT MODE
MO ST
4V
.250V
XOVER
FLAT
HP
LP
2V
20
–
R
+
–
L
+
+BATT
REM
GND
BRIDGE
SPEAKER OUTPUTS
POWER
FUSE
20A
MADE IN THE U.S.A.
LEVEL
INPUT MODE
MO ST
4V
.250V
XOVER
FLAT
HP
LP
2V
Figure 1. This wiring diagram shows
a JBL P-4020 amplifier set to stereo
to drive a pair of full-range speakers.
a JBL P-4020 amplifier set to stereo
to drive a pair of full-range speakers.
Figure 2. This wiring dia-
gram shows a JBL P-4020
amplifier set to bridge
mode (mono) to drive a
single subwoofer.
gram shows a JBL P-4020
amplifier set to bridge
mode (mono) to drive a
single subwoofer.
Figure 3. This wiring diagram
shows a JBL P-4020 amplifier set
for tri-mode operation. For a
desired crossover frequency, use
the chart on page 4 to select an
inductor for the subwoofer, and
corresponding capacitors for left
and right speakers.
shows a JBL P-4020 amplifier set
for tri-mode operation. For a
desired crossover frequency, use
the chart on page 4 to select an
inductor for the subwoofer, and
corresponding capacitors for left
and right speakers.
Figure 4. In this example system,
the front channels of a P-4040
drive a pair of 5-1/4" 2-way speak-
ers, and the rear channels are
bridged to drive a single 12"
woofer.
the front channels of a P-4040
drive a pair of 5-1/4" 2-way speak-
ers, and the rear channels are
bridged to drive a single 12"
woofer.
ST MO
INPUT MODE
PRE OUT
LEVEL
INPUT MODE
MO ST
4V
.250V
FRONT
F+R
FLAT
REAR
LP
FRT
LP
LP
FRT
REAR
XOVER
FLAT HP LP
XOVER
FLAT
HP
LP
LEVEL
4V
.250V
2V
2V
REAR
INPUT
+ R –
+ R –
– L +
– L +
AUX
OUT
OUT
R
L
R
L
FRONT
FRONT
REAR
LINE LEVEL
INPUT
SPKR LEVEL IN
REAR
R
L
LINE LEVEL
INPUT
SPEAKER LEVEL IN
R
+
–
L
+
–
AUX
OUT
R
L
Figure 5. In this expanded system, a JBL P-4040 drives two pairs of 6-1/2" 2-way speakers.
The JBL P-4040’s pre-amp outputs feed a JBL P-4020 to drive a single 12" subwoofer in
bridge mode.
The JBL P-4040’s pre-amp outputs feed a JBL P-4020 to drive a single 12" subwoofer in
bridge mode.
ST MO
INPUT MODE
INPUT
PRE OUT
LEVEL
INPUT MODE
MO ST
4V
.250V
FRONT
F+R
FLAT
REAR
LP
FRT
LP
LP
FRT
REAR
REAR
XOVER
FLAT HP LP
XOVER
FLAT
HP
LP
LEVEL
4V
.250V
2V
2V
20
–
R
+
–
L
+
+BATT
REM
GND
BRIDGE
SPEAKER OUTPUTS
POWER
FUSE
20A
MADE IN THE U.S.A.
LEVEL
INPUT MODE
MO ST
4V
.250V
XOVER
FLAT
HP
LP
2V
LEVEL
INPUT MODE
MO ST
4V
.250V
XOVER
FLAT
HP
LP
2V
P-4020/4040 OM. 7/14/98 11:42 AM Page 6
7
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
resistance
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;
A protection circuit is turning the
Verify the following: off electrical system is
amber protection LED
amplifier off and on
between 5 ~ 18Vdc; temperature is not
(JBL badge on top panel)
over 194°F (90°C); there are no short circuits; speaker
is flashing
loads are not less than 2 ohms (4 ohms in mono)
Audio cycles off and on;
GAIN is set too high
Set Input Sensitivity
amber protection LED
correctly (see page 5)
(on top panel) is flashing
Fuse blows
Incorrect wiring or short circuit
Check connections; refer to Applications
Troubleshooting
Use the following guide to identify
symptoms and solve problems. Make
sure the vehicle’s electrical system is
working properly and power is reaching
the JBL P-4020 (or P-4040).
symptoms and solve problems. Make
sure the vehicle’s electrical system is
working properly and power is reaching
the JBL P-4020 (or P-4040).
Declaration of Conformity
Kongevejen 194B
DK-3460 Birkerød
DENMARK
DK-3460 Birkerød
DENMARK
declare in own responsibility, that the products
described
in this owner’s manual are in compliance with technical
standards:
EN
EN
EN
55013/A12/8.1994
55020/12.1994
55020/12.1994
Steen Michaelsen
Birkerød. DENMARK. 3/98
P-4020/4040 OM. 7/14/98 11:42 AM Page 7
JBL Consumer Products
250 Crossways Park Drive
250 Crossways Park Drive
Woodbury, NY 11797
Part No. SH1122
Made in USA
Made in USA
Specifications
JBL P-4020
JBL P-4040
Power Output, 4 ohms:
2 x 40 watts
4 x 40 watts
Power Output, 2 ohms:
2 x 50 watts
4 x 50 watts
Power Output, Bridged 4 ohms:
100 watts
100 watts x 2
Frequency Response:
20Hz ~ 20kHz +0dB, –1dB
20Hz ~ 20kHz +0dB, –1dB
Input Sensitivity:
250mV ~ 4V
250mV ~ 4V
THD + Noise (4 ohms):
0.05 %
0.05 %
Signal-to-Noise:
>100dB
>100dB
Maximum Current Draw:
18A
40A
Dimensions (W x H x L):
7-5/8" x 2-1/4" x 8-3/4"
13-5/8" x 2-1/4" x 8-3/4"
194 x 58 x 223mm
347 x 58 x 223mm
Specifications
P-4020, P-4040
P-4020/4040 OM. 7/14/98 11:42 AM Page 8
JBL Consumer Products
250 Crossways Park Drive
250 Crossways Park Drive
Woodbury, NY 11797
Part No. SH1122
Made in USA
Made in USA
Specifications
JBL P-4020
JBL P-4040
Power Output, 4 ohms:
2 x 40 watts
4 x 40 watts
Power Output, 2 ohms:
2 x 50 watts
4 x 50 watts
Power Output, Bridged 4 ohms:
100 watts
100 watts x 2
Frequency Response:
20Hz ~ 20kHz +0dB, –1dB
20Hz ~ 20kHz +0dB, –1dB
Input Sensitivity:
250mV ~ 4V
250mV ~ 4V
THD + Noise (4 ohms):
0.05 %
0.05 %
Signal-to-Noise:
>100dB
>100dB
Maximum Current Draw:
18A
40A
Dimensions (W x H x L):
7-5/8" x 2-1/4" x 8-3/4"
13-5/8" x 2-1/4" x 8-3/4"
194 x 58 x 223mm
347 x 58 x 223mm
Specifications
P-4020, P-4040
P-4020/4040 OM. 7/14/98 11:42 AM Page 8
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