JBL DA4002 - Manual (Page 4)

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