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
GENUINE JBL
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.
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 performance, we encourage you to read the remaining pages before installing and operating your new JBL Decade power amplifier. Especially review the Applications 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 particular vehicle. If you do not have the experience, 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 monitor the amplifier and will shut it down if the electrical system voltage drops below 5Vdc or exceeds 18Vdc, temperatures are above 194° F (90° C), short circuits occur or current draw exceeds product 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 drilling 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 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 configurations.
•If the amplifier’s fuse must be replaced, use only the same rating and type as a replacement. Do not substitute another kind.
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SPEAKER INPUT |
LINE INPUT |
INPUT |
BASS EQ |
CROSSOVER |
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L + |
R + |
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LEVEL |
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L – |
R – |
R |
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OFF +6dB |
LPF FLAT HPF |
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1 |
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10 |
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L
5
3
– |
BRIDGED + |
REM GND(–) BATT(+) |
FUSE |
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+ LEFT – |
– RIGHT + |
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20 |
20 AMP |
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SPEAKER OUTPUT |
POWER |
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DA4002/DA6502
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 connectors 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 sensitivity 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). Lowpass filter frequency selector (DA1002).
9.Bass E.Q. – Enables bass boost +6dB @ 50Hz.
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SPEAKER |
MODE |
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INPUT |
SPEAKER |
INPUT |
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MODE |
INPUT |
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+ |
+ |
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– |
+ |
L |
R |
R |
L |
R |
– |
– |
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– |
– |
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MONO |
HPF |
STEREO |
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STEREO |
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MONO |
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L |
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7 |
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1 |
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3 |
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5 |
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– |
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+ |
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BRIDGED + |
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POWER |
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FUSE |
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BRIDGED |
+ LEFT – |
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GND(–) |
BATT(+) |
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+ LEFT – |
– RIGHT + |
– RIGHT + |
REM |
30 AMP |
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30 |
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SPEAKER OUTPUT |
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DA3504 |
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2 |
1 |
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7 |
9 |
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INPUT LEVEL |
BASS EQ |
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LOW |
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R |
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1 |
10 |
OFF +6dB |
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OFF |
70Hz 100Hz |
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L |
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3 |
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5 |
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4 |
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20 AMP |
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SPEAKER OUTPUT |
+ |
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POWER |
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FUSE |
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– |
BRIDGED |
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GND(–) |
BATT(+) |
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+ LEFT – |
– RIGHT + |
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REM |
20 AMP |
20 AMP |
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20 |
20 |
DA1002
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