DA 4002 (serv.man3) — JBL Car Audio User Guide / Operation Manual

Model
DA 4002 (serv.man3)
Pages
8
Size
560.52 KB
Type
PDF
Document
User Guide / Operation Manual
Brand
Device
Car Audio
File
da-4002-sm3.pdf
Date

View JBL DA 4002 (serv.man3) User Guide / Operation Manual online

D
E
C
A
D
E
A M P L I F I E R S   D A 4 0 0 2 ,   D A 6 5 0 2 ,   D A 3 5 0 4 ,   D A 1 0 0 2
G E N U I N E   J B L
DA OM  7/14/98 11:38 AM  Page 1
2
Amplifier Features
• 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
About This  Manual
To attain maximum amplifier perfor-
mance, we encourage you to read the
remaining pages before installing and
operating your new JBL Decade power
amplifier. Especially review the Appli-
cations section for ideas on designing
and expanding your system. Also, save
these instructions for future reference.
Important: Installation of automotive
stereo components can require extensive
experience in performing a variety of
electrical 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 partic-
ular 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.
Installation Precautions and Notes
• The JBL Decade Power amplifiers have
five levels of circuit protection that mon-
itor 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
product specifications. For best perfor-
mance, 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
drilling any holes or installing any
screws. Remember that mounting
screws can extend behind the mount-
ing 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
polarity markings on the rear panel.
Refer to the application drawings to set
up the amplifier for operation in stereo,
bridged-mono, bi-amp or tri-mode con-
figurations.
• If the amplifier’s fuse must be replaced,
use only the same rating and type as a
replacement. Do not substitute another
kind.
Thank you
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 fac-
tory-installed audio systems for distor-
tion-free performance. All JBL Decade
Series power amplifiers feature built-in
electronic crossovers for easy system
expansion without additional outboard
processors.
DA OM  7/14/98 11:38 AM  Page 2
+
+
LEFT
RIGHT
+
BRIDGED
SPEAKER OUTPUT
POWER
FUSE
20 AMP
REM
GND(
) BATT(
+
)
20
3
4
5
DA4002/DA6502
3
Controls and Connectors
1. Pre-amp Line Level Input Connector –
Connects to line-level output from the
source unit. 
2. Floating Ground Factory-Head-Unit
Interface Speaker Input – Connects to
speaker level output from the source
unit (2-channel on DA4002, DA6502,
DA1002; 2 separate 2-channel connec-
tors on DA3504).
3. Speaker-Output Connector – 2-channel
on DA4002, DA6502 and DA1002; 4-
channel on DA3504.
4. Fuse – DA4002: 15A ATC, 
DA6502: 20A ATC, DA1002 2x 20A ATC,
DA3504: 30A ATC.
5. Power Connector – Connection for
12V+, Gnd and Rem in. 
6. Input-Mode Switch – Sums left and
right inputs.
7. Input-Level Control – Adjusts input sen-
sitivity for pre-amp level and speaker
level inputs.
8. Crossover Selector – Determines
whether the crossover is a High-Pass
filter @120Hz (HP), a Low-Pass filter
@120Hz (LP) or unfiltered (FLAT). Low-
pass filter frequency selector (DA1002).
9. Bass E.Q. – Enables bass boost +6dB 
@ 50Hz.
SPEAKER
INPUT
INPUT
MODE
SPEAKER
INPUT
INPUT
MODE
STEREO
MONO
L
+
R
+
LINE INPUT
R
L
1
10
BASS
EQ
BASS
EQ
INPUT
LEVEL
INPUT
LEVEL
CROSS
OVER
CROSS
OVER
OFF 6dB
+
OFF 6dB
+
LPF
HPF
FLAT
LPF
HPF
FLAT
1
10
LINE INPUT
R
L
STEREO
MONO
L
R
+
8
7
6
9
2
1
SPEAKER INPUT
LINE INPUT
R
L
BASS EQ
INPUT
LEVEL
L
+
+
R
R
L
OFF
6dB
+
1
10
CROSSOVER
LPF
HPF
FLAT
+
+
+
REAR
LEFT
RIGHT
+
+
LEFT
RIGHT
BRIDGED
+
BRIDGED
SPEAKER OUTPUT
FRONT
POWER
FUSE
30 AMP
REM
GND(
) BATT(
+
)
30
2
7
8
9
1
7
2
1
6
3
4
5
L
L
+
+
+
R
R
R
+
SPEAKER INPUT LINE INPUT
R
L
1
10
BASS EQ
INPUT LEVEL
L
OFF
6dB
+
LOW PASS
FILTER
OFF
70Hz 100Hz
DA1002
SPEAKER OUTPUT
+
+
+
POWER
REM
GND(
) BATT(
+
)
BRIDGED
RIGHT
LEFT
FUSE
20 AMP
20 AMP
20 AMP
20
20
DA3504
3
5
4
2
1
7
8
9
DA OM  7/14/98 11:38 AM  Page 3
4
Wiring the Speaker Output
Connections
1. Connect the speakers, observing
proper polarity, to the speaker output
barrier strip on the amplifier using at
least 16G high-quality speaker wire.
(Note: The total impedance of the
speakers connected to the outputs
when the amp is driven in stereo must
be at least 2 ohms.) 
2. If you are bridging the amplifier, con-
nect the speaker wires to the terminals
marked “bridge”, observing proper
polarity. (Note: The total impedance of
the speaker system to be connected to
the amplifier must be at least 4 ohms
in bridge mode.)
3. If you are running the amp in Tri-Mode
(stereo and mono simultaneously to
one or two pairs of satellite speakers
and a subwoofer), refer to the chart
below to determine the capacitor and
inductor values you’ll need to route
bass signals to the woofer, and
midrange and high frequencies to the
satellite speakers. These passive
crossover components will also ensure
that the impedance of the speaker
system doesn’t drop below 2 ohms.
Wiring the Input Connections
1. If you are using conventional RCA
input connections and a source unit
with output voltage less than 4V, sim-
ply plug the RCA plugs into the RCA
jacks on the amplifier.
2. If you are connecting the amplifier to a
factory-installed source unit, or to a
source unit that only has speaker-level
outputs, connect the speaker outputs of
the source to the speaker input plug on
the amp using the connector provided.
Mounting the Amplifier
The JBL Decade 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.
Wiring the Power Connections
Refer to diagrams on page 3 for connec-
tor locations. 
1. For power, remote and speaker wires,
strip 1⁄4" off one end of each jacket to
reveal bare wire for insertion into the
barrier strip connectors.
2. Locate the 3-connection barrier strip
labeled +Batt, Rem and Gnd. Connect a
black wire (at least 12G for DA4002,
10G for DA6502, DA1002 and DA3504)
to the Gnd terminal and connect the
other end to the nearest bare-metal
chassis component. Then, connect a
red wire (at least 12G for DA4002, 10G
for DA6502, DA1002 and DA3504) from
the vehicle’s +12-volt battery terminal
to the +Batt terminal on the barrier
strip. Finally connect a blue wire (16G)
to the Rem terminal on the barrier strip
and connect the other end to the Rem
output of the source unit. 
FREQUENCY
INDUCTOR
CAPACITOR
Crossover 
6dB/oct. LP
6dB/oct. HP
(4 ohm)
(4 ohm)
75Hz
8.0mH
530µF
100Hz
6.4mH
400µF
125Hz
5.0mH
318µF
150Hz
4.2mH
265µF
175Hz
3.6mH
227µF
200Hz
3.2mH
198µF
DA OM  7/14/98 11:38 AM  Page 4
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Here you can view online or download JBL DA 4002 (serv.man3) User Guide / Operation Manual in pdf. This User Guide / Operation Manual can help you recover, restore, fix, disassemble and repair JBL DA 4002 (serv.man3) Car Audio. Information contained in JBL DA 4002 (serv.man3) service manual (repair manual) typically includes:

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