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High-Level Input
(speaker cables)
Low-Level Input
(RCA)
Speaker Connections
Connect speaker wires
observing polarity. The
minimum impedance load
for the DA304, DA602, DA604
and DA904 is 2 ohms stereo
and 4 ohms bridged. Use of
loads lower than these is not
recommended and may cause
amplifier damage. The DA304,
DA602, DA604 and DA904 can
be wired for stereo, bridged or
stereo/bridged simultaneous
operation.
Input Signal Connections
Low Level Input (RCA)
Low level (RCA) input signal is preferred for best performance. Typical trunk-
mount amplifier installations require a 17-20 foot RCA cable. Most trucks
and under-seat applications require a 6-9 foot RCA cable. Using twisted pair
construction RCA cables will minimize noise.
High Level Input
(Speaker Wire)
High level inputs should only
be used when RCA outputs are
not available from the head unit.
Connect the head unit speaker
outputs to the high level input
connector as shown below. The
black wire (signal reference
ground) may or may not require a
connection to chassis ground
- depending on your particular
installation.
1-8 ohms
Subwoofer (mono)
Typical Bridged Wiring
(4 ohms minimum)
2-8 ohms
2 Speakers (stereo)
Typical Stereo Wiring
(2 ohms minimum)
Note: Do not use both low and high level inputs
at the same time - connect only one or the
other. High level inputs not available on DA4001,
DA6001 and DA8001.
DA602 speaker connections shown
9
INSTALLATION
Amplifier Connections