P 80.4 (serv.man2) - JBL Car Audio Service Manual (repair manual). Page 4

Controls and Connections

Controls and Connections

Mounting the Amplifier

1. It allows left and right input channels to be 
    connected to the amplifier using RCA plugs.

 
    

2. Speaker Output Connector - Connect speaker
    wiring to these connectors. See wiring instruc-
    tions on page 4 for more information.

3. Fuse - Two 20 Amp ATC type Fuses.

The JBL Power  Series amplifiers 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.

3. Mount the amplifier and securely tighten the mounting screws.

4. Power Connection for 12V+, GND and REM 

    connections for power wires. See wiring instruc-

    tions on page 4 for more information.

5. Input-Level Control - Adjusts input sensitivity

    for pre-amp level and speaker level inputs.

6. Frequency adjustment-When the LPF/FLAT/HPH switch

    is either in the LPF or HPF position,this sdjusts where the 

    frequency response of the amplifer rolls off on the upper

    or lower end of the range,depending on switch position.

7. When this switch is in the FLAT position the amplifier operates

    at full range grequencies. When in the LPF position, the

    Bass frequencies;when the switch is in the HPF position,the

    amplifier operates in the Upper frequencies.

8. It allows left and right input channels such as higf level 

    speaker output signals to connected to the amplifier

Multichannel Automotive Amplifier

3

FUSE 20Ax2

SPEAKER OUTPUTS

-      L       +                 -      R       +
-

+

BAIDGED

FRONT

REAR

+BATT

REM

GND

POWER

+   R   -     -   L   +

+   R   -     -   L   +

HIGH LEVEL

HIGH LEVEL

X-OVER

FLAT  HP    LP

4V  250mV

32Hz   320Hz

32Hz  320Hz

4V   250mV

ST       MO

ST       MO

FLAT   HP  LP

INPUT MODE

X-OVER

R

R

L

L

FRONT

LEVEL      FREQ

FREQ    LEVEL

REAR

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P80.4

p80.4

2

3

4

8

1

5

6

6

5

7

7