7
INSTALLATION
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Speaker Connections
Connect speaker wires observing polarity. The minimum impedance load for the
AX550D is 2 ohms stereo and 2 ohms mono. Use of loads lower than these is not
recommended and may cause amplifier damage.
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.
L
R
Note:
Do not use both low and high level inputs
at the same time - connect only one or the other.
Amplifier Connections
CHANNELS 1 & 2
CHANNELS 3 & 4
SUBWOOFER
2-8 ohm
2-8 ohm
2-8 ohm