Input Signal Connections; Speaker Connections; Amplifier Connections - Dual Mobile Power Amplifiers XPA2500 Installation & Owner's Manual

Speaker Connections
Connect speaker wires observing
polarity. The minimum impedance
load for the XPA2500 and XPA4640
is 2 ohms stereo and 4 ohms
bridged. Use of loads lower than
these is not recommended and
may cause amplifier damage.
The XPA2500 and XPA4640 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.
CAUTION
Do not use both low and high level inputs at the same time - connect only one or the other.
XPA SERIES INSTALLATION
Amplifier Connections
2 Speakers (stereo)
Typical Stereo Wiring
(2 ohms minimum)
XPA2500 speaker connections shown
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)
7