JBL Px300.4 Car Amplifier User Manual


 
5
APPLICATIONS – Px300.4
The JBL Px300.4 amplifier can be set
up for stereo or tri-mode operation, as
shown in
Figures 6 and 7.
NOTE: For simplicity, Figures 6 and 7 do
not show power, remote and input
connections.
Px300.4
(rear panel)
POWER
FUSES
GND REM BATT
Px300.4
SPEAKER OUTPUTS SPEAKER OUTPUTS
STEREO
REAR
F
RONT
LRLR
BRIDGED
N
EON NEON
-
+
+
-
LF
System
+
-
RF
System
Subwoofer
Set REAR
X-OVER MODE to LP
(on input panel)
FLAT HP LP
MODE
Set FRONT
X-OVER MODE to HP
(on input panel)
FLAT HP LP
MODE
Set FRONT
INPUT MODE to ST
(on input panel)
Set REAR 
INPUT MODE to MO
(on input panel)
ST
INPUT
MODE
MO
ST
INPUT
MODE
MO
See “Setting the Crossover(s)”
on page 6 to set FREQ and SLOPE
Px300.4
(rear panel)
POWER
FUSES
GND REM BATT
P
x300.4
SPEAKER OUTPUTS SPEAKER OUTPUTS
STEREO
REAR
FRONT
LRLR
BRIDGED
NEON NEON
+
-
+
-
LR Speaker
RR Speaker
RF Speaker
LF Speaker
+
-
+
-
Set REAR and FRONT
INPUT MODE to ST
(on input panel)
Set REAR and FRONT
X-OVER MODE to FLAT 
(on input panel)
F
LAT HP LP
MODE
S
T
INPUT
M
ODE
M
O
Figure 6. The JBL Px300.4
amplifier is set to stereo mode
to drive front and rear pairs of
full-range speakers.
NOTE: To limit bass sent to
full-range speakers, set
X-OVER MODE to HP. See
page 6 to set FREQ and SLOPE.
Figure 7. The JBL Px300.4
amplifier is set to drive a stereo
component system and a
subwoofer with a nominal
impedance of 4 ohms or greater.
NOTE: To drive a pair of rear
midbass speakers (instead of
subwoofer), set INPUT MODE
to ST, X-OVER MODE to LP,
and use DBO to set HP filter.