Audiovox AXT-500 User Manual

Model AXT-500
500 Watt 4-Channel
Bridgeable MOSFET Amplifier

OWNER'S
MANUAL

INDEX

Specifications.....................................................................3

Precautions........................................................................4

Installation Instructions...................................................... 5

Wiring Instructions........................................................ 6 - 7

4-Channel and Mixed-Mono Input Wiring Diagram.......... 8

4-Channel and Mixed-Mono Output Wiring Diagram....... 9

3-Channel and Mixed-Mono Input Wiring Diagram..........10

3-Channel and Mixed-Mono Output Wiring Diagram....... 11

2-Channel and Mixed-Mono Input Wiring Diagram..........12

2-Channel and Mixed-Mono Output Wiring Diagram....... 13

Operation.................................................................. 14 - 15

Warranty...........................................................................16

HIGH PERFORMANCE STEREO AMPLIFIER

This power amplifier has been designed to provide high Quality performance with a
minimum of maintenance. However, it's performance will only be as good as the care
and quality of components with which it is installed. We therefore advise that you
read these instructions very carefully to familiarize yourself with the product and it's
features.
Should you require assistance with the installation or wiring so this unit, please call
our toll-free "HELP" line at 1-800-645-4994 during the days/hours shown.

SPECIFICATIONS

HELP!

1-800-645-4994

Monday-Friday 8:30am - 7:00pm Eastern
Saturday 9:00am - 5:00pm Eastern

Maximum Output Power: 500 Watts

75 Watts RMS x 4
@ 4 Ohms
150 Watts RMS x 2

@ 4 Ohms
Output Impedance: 2 - 8 Ohms (stereo)
Frequency Response: 10 - 35KHz. +/-1 dB

Channel Separation: 60 dB

Signal / Noise Ratio: 90 dB (A-Weighted)

* Due to continuing improvement, Audiovox reserves the right to change features and design without notice.

Input Impedance: Low-Level 10K Ohms

High-Level 100 Ohms

Input Sensitivity: Low-Level 200 mV - 8 V.

High-Level 2V - 10 V

Filter type: Selectable Full/Low-pass

Crossover @ 12dB/Octave
Filter Crossover: LPF 50-250 Hz (variable)
Supply Voltage: 12 volts, negative ground
Fuse Rating: 30 amps.
Dimensions (W X H X D): 295 mm X 54.3 mm X 230 mm

11-5/8" X 2-1/8" X 9"

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PRECAUTIONS

1. Although this unit is designed with built-in self-protection circuits, there may be a possibility of damage if it is not wired
correctly. Please follow the wiring instructions carefully for the type of system being used.

2. The last lead to be connected is the wire to the positive( ) terminal of the battery. Connect this wire only after having
completed and checked all other connections to the amplifier.

3. By nature of its design, a power amplifier generates heat and requires good air circulation around it to dissipate that
heat. Do not install the amplifier in an enclosed area which does not permit adequate air circulation. Should the
temperature of the unit rise too high, the internal thermal sensors will shut off operation until it has cooled down
sufficiently.

4. If fuse replacement is necessary, use only fuses of the same ampere rating as originally supplied with the unit. The
use of fuses with incorrect ratings may cause serious damage to the amplifier. If fuses blow consistently, carefully
check all electrical connections to the unit.

5. Supply of adequate battery voltage is critical to the proper operation of the power amplifier. The leads to the battery
and chassis ground must be of a thick enough gauge to provide this voltage to the amplifier. We recommend #10 gauge
wire or thicker (smaller gauge #) for the battery and ground leads.

6. Make certain that the speaker(s) to be used with this amplifier are capable of handing the output power (wattage) of
the unit. Use of speaker(s) not rated for the output of this amplifier may cause damage to or failure of the speaker(s)
for which Audiovox will not be liable.

++

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INSTALLATION INSTRUCTIONS

1. Select a mounting area where the amplifier will
have sufficient air circulation for proper cooling.
Inadequate air circulation will cause the temperature
of the amplifier to rise and will trigger the thermal
protection mode.

2. Place the amplifier on the mounting surface and
mark the locations of the four mounting holes as
shown in the illustration.

3. Remove the amplifier and drill a 1/8" hole at
each of the four locations.

CAUTION: Before drilling the holes, look at the

underside of the mounting surface. Always check
carefully to avoid drilling into wiring, braces, fuel
or brake lines.

CHECK BEFORE YOU DRILL!

4. Secure the amplifier to the mounting surface using
The self-tapping screws provided.

INSTALLATION DIAGRAM

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WIRING INSTRUCTIONS

The wiring of your amplifier will depend on the system and speakers you are using but will either be a stereo, mono, or
mixed-mono application. The following pages illustrate the input and output wiring for these types. please refer to the
appropriate diagrams for the system configuration you are using. The power and speakers wire connections for this amplifier
are made via screw tightened terminal blocks. Loosen the screw for the connection to be made and fully insert the wire
(strip 1/2" of insulation from the end) under the respective screw on the side panel (crimp-on "U" terminals are provided
to simplify wiring and we recommend their use.). Tighten the screw down to secure the wire.

1. Power Connection

The battery terminal (BATT) must be connected directly to the positive terminal of the vehicle battery to provide an
adequate voltage source and minimize noise. Connecting the battery terminal lead to any other point (such as the fuse
block) will reduce the power output and may cause noise and distortion. Use only #10 gauge or thicker (smaller gauge
#) wire for this lead and connect it to the terminal of the battery after all other wiring is completed.

2. Ground Connection

The ground terminal (GND) connection is also critical to the correct operation of the amplifier. Use a wire of the same
gauge as the power connection (#10 or thicker) and connect it between the ground terminal (GND) of the amplifier and
a metal part of the vehicle close to the mounting location. This wire should be as short as possible and any paint or rust
at the grounding point should be scraped away to provide a clean metal surface to which the end of the ground wire can
be screwed or bolted.

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3. Remote Turn-On Connection

The amplifier is turned on by applying +12 volts to the remote turn-on terminal (REM). The wire lead to this terminal
should be connected to the "Auto-Antenna" lead from the car stereo which will provide the +12 volts only when the car
stereo is turned on. If the car stereo does not provide an Auto-Antenna lead, the remote turn-on lead may be wired to
an "Accessory" or "Radio" terminal in the car's fuse block. This will turn the amplifier on and off with the ignition key,
regardless of whether the car stereo is on or off. The remote turn-on lead does not carry large currents, so #20 gauge
wire may be used for this application.

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#10