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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.

CHANNELS 1 & 2

2-8 ohm

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.

Low-Level Input

(RCA)

Note: Do not use both low and high level inputs

at the same time - connect only one or the other.

INSTALLATION

Amplifier Connections

High-Level Input

(speaker cables)

CHANNELS 3 & 4

2-8 ohm

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

2-8 ohm