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XIA4225 INSTALLATION
Amplifier Connections
Speaker Connections
Connect speaker wires observing
polarity. The minimum impedance
load is 2 ohms stereo and 4 ohms
bridged. Use of loads lower than
these is not recommended and
may cause amplifier damage.
The XIA4225 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.
CAUTION: Do not use both low and high
level inputs at the same time - connect
only one or the other.
Subwoofer (mono)
Typical Bridged Wiring
(4 ohms minimum)
2 Speakers (stereo)
Typical Stereo Wiring
(2 ohms minimum)