DA 1002 (serv.man9) - JBL Car Audio User Guide / Operation Manual. Page 2

2

• 4-, 3- or 2-channel operation (DA3504)

2- or 1-channel operation (DA4002,
DA6502, DA1002)

• Simultaneous stereo and mono

operation

• Built-in 12dB/oct electronic crossover
• Oversized Floating Rail Mosfet 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)
• Power-on indicator badge

To attain maximum amplifier performan-
ce, we encourage you to read the remai-
ning pages before installing and operat-
ing your new JBL Decade power amplifi-
er. Especially review the Applications
section for ideas on designing and expan-
ding your system. Also, save these instru-
ctions for future reference.

Important: Installation of automotive ste-
reo components can require extensive
experience in performing a variety of ele-
ctrical and mechanical procedures.
Although these instructions explain how
to install a JBL Decade power amplifier in
a general sense, they do not show the
exact installation methods for your parti-
cular vehicle. If you do not have the expe-
rience, do not attempt the installation
yourself; instead ask your Authorized JBL
Car-Audio Dealer about professional
installation options.

• The JBL Decade power amplifiers have

five levels of circuit protection that moni-
tor the amplifier and will shut it down if
the electrical system voltage drops
below 5Vdc or exceeds 18Vdc, tempera-
tures are above 194° F (90° C), short cir-
cuits occur or current draw exceeds pro-
duct specifications. For best performance,
check the intended mounting site to make
sure the operating environment does not
create conditions that will trigger circuit
protection.

• Prior to installation, turn off all audio

systems and other electrical devices.
Also disconnect the (–) negative lead
from the vehicle’s battery.

• At the installation site, locate and make

a note of all fuel lines, hydraulic brake
lines and electrical wiring. Use extreme
caution when cutting or drilling in and
around these areas.

• Check clearances on both sides of a

planned mounting surface before dril-
ling any holes or installing any screws.
Remember that mounting screws can
extend behind the mounting surface. 

• Always wear protective eyewear when

using tools. 

• When routing cables, keep input signal

cables away from power cables and
speaker wires. 

• When making connections, make sure

that each connection is clean, insulated,
and properly secured. Observe the pola-
rity markings on the rear panel. Refer to
the application drawings to set up the
amplifier for operation in stereo, bri-
dged-mono, bi-amp or tri-mode confi-
gurations.

• If the amplifier’s fuse must be replaced,

use only the same rating and type as a
replacement. Do not substitute another
kind.

for purchasing your new

JBL Decade

™

Series power amplifier.

Decade Series power amplifiers feature
the latest advances in discrete circuit
topology ensuring low distortion and
superbly clean and clear sound quality.
In addition to RCA-type pre-amp inputs,
Decade Series amplifiers feature Floating
Ground Factory-Head-Unit Interface

™

,

designed to facilitate integration with fact-
ory-installed audio systems for distortion-
free performance. All JBL Decade Series
power amplifiers feature built-in electro-
nic crossovers for easy system expansion
without additional outboard processors.

 35633_Decade DA 4002, Eng  04/11/98  11:02  Side 2