JBL P80.2 Service manual

P80.2

2 CHANNEL
AUTOMOTIVE
POWER AMPLIFIER

TECHNICAL MANUAL

JBL CONSUMER PRODUCTS
250 CROSSWAYS PARK DRIVE, WOODBURY, NY 11797
8500 BALBOA BOULEVARD, NORTHRIDGE, CA91329
WWW.JBL.COM

Multichannel Automotive Amplifier

P80.2

controls and connections

Specifications .........................................................1

Features .................................................................2

Test Conditions and Notes ......................................2

Controls and Connections .....................................3

Mounting the amplifier............................................3

Typical System Configuration (Wiring) ....................4

Printed Circuit Boards (Top View)...................5

Parts Lists...........................................................6~8

Block Diagrams.......................................................9

Packaging Exploded View.....................................10

Integrated Circuit Diagrams...................................11

Transistor Diagrams..............................................12

Schematic Diagrams...................

Amplifier Exploded View........................................15

SPECIFICATIONS

Number of Channels . . . . . . . . . . . . . . . . . . .

4 Ohms Stereo . . . . . . . . . . . . . . . . . . . . .

2 Ohms Stereo . . . . . . . . . . . . . . . . . . . . .

4 Ohms Bridged . . . . . . . . . . . . . . . . . . . .

T.H.D. @ 4 Ohms rated Power . . . . . . . . . . . . .

Frequency Response . . . . . . . . . . . . . . . . . .

Signal to noise Ratio . . . . . . . . . . . . . . . . . . .

Slew Rate . . . . . . . . . . . . . . . . . . . . . . . . .

Channel Separation . . . . . . . . . . . . . . . . . . . .

Damping Factor . . . . . . . . . . . . . . . . . . . .

Fuse size. . . . . . . . . . . . . . . . . . .

Line Level Sensitivity. . . . . . . . . . . . . . .

DC Operating Range. . . . . . . . . . . . . . .

....................13~14

1,2
40W x 2
80W x 2
160W x 1

0.0590
10Hz ~ 50KHz
>90dB
>-13V / us
>60dB
>100
20A x 2
250mV ~ 4V
6V ~ 18V

External Dimensions (Inches)

Length . . . . . . . . . . . . . . . . . . . . . . . . . . .

Width . . . . . . . . . . . . . . . . . . . . . . . . . . .

Depth . . . . . . . . . . . . . . . . . . . . . . . . . . .

External Dimensions (mms)

Length . . . . . . . . . . . . . . . . . . . . . . . . . . .

Width . . . . . . . . . . . . . . . . . . . . . . . . . . .

Depth . . . . . . . . . . . . . . . . . . . . . . . . . . .

JBL continually strives to improve its products. New materials, production methods and design refinements are
introduced into existing models without notice as a routine expression of our design philosophy. For this reason,
Power Series Multichannel Automotive Amplifiers may differ in some respects from their published specifications
and descriptions, but will always equal or exceed the original specifications unless otherwise stated.

8 3/4
8 1/8
2 11/16

222
206
68

1

P80.2

features

2-Channel Operation
Advanced MOSFET Oversized Floating Rail Power Supply
Floating Ground Factory - Head - Unit Speaker - Level input
Variable Input Sensitivity (250mV - 4V)
Fully Complementary Output Stage with Class-A Voltage Amplification
Gold-plated Power, Input and Output Connectors
2-Ohm Stable (Stereo)

Multichannel Automotive Amplifier

Test Conditions and Notes

All tests to be done, unless otherwise specified, from 10Hz to 50KHz at 14.4V DC into 4 ohm loads and adjust
the units gain so that with a .775 volt input signal the unit is at its maximum rated output. All measurements
will be done using an Audio precision system one and the supply voltage.

An A+ line voltage of 14.4V DC shall be applied to the unit under test for all measurements unless otherwise
specified. The voltage applied to the unit shall be measured at the power connection on the Amplifier.

Signal Source
Unless otherwise specified, all tests shall be conducted with the Audio Signal Generator output configured to
be balanced, less than or equal to 50 ohm source impedance, and floating. The signal source "GND" shall be
connected to the Amplifier PWR GND at the Amplifier.

Output Load
Unless otherwise specified, all tests shall be conducted with 4 ohm resistive loads having less than 10%
reactive components at any frequency below 75KHz. Each resistor shall have a value that remains within 1%
while dissipating the rated output of the unit under test.

2

Multichannel Automotive Amplifier

P80.2

Controls and Connections

R

+ R - - L +

HIGH LEVEL

1

1

7

INPUTS

L

1

FUSE 20A

- L + - R +

­BRIDGED

+

2

Controls and Connections

1. It allows left and right input cchannels 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.

INPUT MODE
INPUT
LEVEL

ST MO

.

.

4V 250mV

5

8

3 4

32Hz 320Hz

+BATT

FREQ

6

X-OVER

FLAT HP LP

9

REM

POWER

P80.2

GND

5. Input-Level Control - Adjusts input sensitivity
for pre-amp level and speaker level inputs.

6. electronic crossover is a 12dB/oct.
Low pass filter which can be Set at any frequency
between 32Hz and 320Hz.

7. It allows left and right input channels such as high level
speaker output signals to be connected to the amplifier

3. Fuse - 20 Amp ATC type Fuse.

connecting L&R channel input when input mode can
be set on "ST"

8.This functions L&R channel output in speaker by

4. Power Connection for 12V+, GND and REM
connections for power wires. See wiring instruc-

if setting on "Mono", this functions L&R channel output
in speaker only by connecting R channel pass.

tions on page 4 for more information.

9. This switch allows these two amplifier channels to play
full range,low pass,or high pass

Mounting the Amplifier

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.

3

P80.2

Power

Antenna

Antenna Input

Cassette/Receiver

Power Supply

Wires

Typical System Configuration

Cassette/CD Tuner

(Head Unit)

Multichannel Automotive Amplifier

CD Player or Changer

Power

Antenna

Relay

Power Supply

Antenna Motor Ground

Remote Antenna

Fuse

Remote On/Off

Ignition
Switch

Red - Main +12V

Black - Power Ground

Line

Level

Input

Fuse

Black Power

Remote On/Off

60 Amp (Not Included)

Fuse

Power Ground

Main +12V

Amplifier

Power

Connection

Vehicle Battery

Speakers

Chassis Ground

4