Dual XPR520, Installation & Owner'S Manual

Page: 6 / 12

6
Amplifier Connections
Speaker Connections
Connect speaker wires observing
polarity. The minimum impedance
load for the XPR520 is 2 ohms
stereo and 4 ohms bridged. Use
of loads lower than these is not
recommended and may cause
amplifier damage. The XPR520
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.
Subwoofer (mono)
Typical Bridged Wiring
(4 ohms minimum)
2 Speakers (stereo)
Typical Stereo Wiring
(2 ohms minimum)
HI-LEVEL INPUT CONNECTION
Grey = Right (+)
Grey/Black = Right (-)
Black = Ground
White/Black = Left (-)
White = Left (+)
CAUTION
Do not use both low and high level inputs at the same time - connect only one or the other.