Audiovox AXT-550 - Rampage Amplifier Manuale utente

OWNER'S

MANUAL

Model AXT-550

500 Watt 2-Channel

Bridgeable MOSFET Amplifier

INDEX

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

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

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

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

Input Wiring Diagram........................................................ 8

Output Wiring Diagram..................................................... 9

Operation.................................................................. 10 - 12

Warranty...........................................................................13

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 High/Full/Low-pass

Crossover @12 dB / Octave

Filter Crossover: LPF 50-250 Hz (variable)

HPF 50-250 Hz (variable)

Supply Voltage: 12 volts, negative ground

Fuse Rating: 15 amps.

Dimensions (W X H X D): 295 mm X 54.3 mm X 228.6 mm

11-5/8" X 2-1/8" X 9”

Maximum Output Power: 500 Watts

125 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

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

-3-

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.

HELP!

1-800-645-4994

Monday-Friday 8:30am - 7:00pm Eastern

Saturday 9:00am - 5:00pm Eastern

HIGH PERFORMANCE STEREO AMPLIFIER

SPECIFICATIONS

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.

-4-

PRECAUTIONS

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.

-5-

INSTALLATION INSTRUCTIONS

INSTALLATION DIAGRAM

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.

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.

#10

-6-

WIRING INSTRUCTIONS

4. Speaker Connections

Depending on the type and number of speakers used with the amplifier, wire them to the speaker terminals as per the

appropriate wiring diagram. For most applications, #16 gauge wire should be used for the speaker leads but in no case

thinner than #18 gauge. For leads in excess of 10 feet, #14 gauge is recommended. When wiring the speakers, pay

careful attention to the polarity of the terminals on the speakers and make certain they correspond to the polarity of the

corresponding terminals on the amplifier. DO NOT ground any speaker leads to the chassis of the vehicle.

5. Input Connections

This amplifier features both high and low-level input capability. Use either the low-level or high-level inputs, not both.

If low-level outputs are provided from the car stereo, it is recommended that the low-level inputs be used for lowest

distortion and best performance. Use good quality shielded audio cables with RCA plugs at both ends to connect

the stereo to the amplifier and keep the cable lengths to a minimum to avoid noise.

If the car stereo does not provide low-level outputs, the amplifier may be connected via the speaker (high-level)

outputs from the stereo. Wire the speaker leads from the car stereo to the 5-pin adaptor harnesses as shown in the

diagram (shielded cable is not required for this application) and plug the connectors into the mating High-Level Input

socket on the amplifier. Carefully splice and insulate all wire connections.

CAUTION: Use either the low-level or the high-level inputs on the amplifier.

DO NOT use both input levels at the same time.

-7-

WIRING INSTRUCTIONS

-8-

USE EITHER HIGH-LEVEL OR

LOW-LEVEL INPUT, NOT BOTH.

IMPORTANT

RCA TYPE

SHIELED CABLES

(NOT INCLUDED)

Right

CAR STEREO

INPUT WIRING DIAGRAM

White

Green

Black

Brown

Gray

Left

CHASSIS GROUND ON RADIO

NOTE:

When using High-Level (Speaker) Outputs

of car stereo, connect only the Positive (+)

wires to the amplifier. Do not use Negative (-)

Output wires (insulate ends with tape and

leave disconnected)

HI-INPUTHI-INPUT

GNDGND

L +L + R +R +

LLRR

PWRPWR

PRTPRT

MINMIN MAXMAX

GAINGAIN

0dB0dB 18dB18dB 50Hz50Hz 250Hz250Hz

LPFLPF

50Hz50Hz 250Hz250Hz

HPFHPF

X-OVERX-OVER

HPFHPF

LPFLPF

FULLFULL

BASS

BOOST

BASS

BOOST

LOW LEVEL INPUTS

HIGH LEVEL (SPEAKER) INPUTS

(WIRE SIDE VIEW)

-9-

CAR STEREO

GROUND

BATTERY

FOR 12 VOLT USE ONLY AUTO-ANTENNA LEAD

GROUND METAL

SECTION OF VEHICLE

EXISTING SCREW OR BOLT CLEAN PAINT, RUST, DIRT

OR GREASE FROM AREA FOR GOOD CONNECTION.

RIGHT

SPEAKER

2-8 OHM

LEFT

SPEAKER

2-8 OHM

OUTPUT WIRING DIAGRAM

LEFT RIGHT

REMBATT GND

FUSEFUSE

BRIDGEDBRIDGED

USE #10 GAUGE

WIRE (SEE TEXT)

-10-

312 5

OPERATION

HI-INPUTHI-INPUT

GNDGND

L +L + R +R+

LLRR

PWRPWR

PRTPRT

MINMIN MAXMAX

GAINGAIN

0dB0dB 18dB18dB 50Hz50Hz 250Hz250Hz

LPFLPF

50Hz50Hz 250Hz250Hz

HPFHPF

X-OVERX-OVER

HPFHPF

LPFLPF

FULLFULL

BASS

BOOST

BASS

BOOST

LEFT RIGHT

REMREMBATTBATT GNDGND

FUSEFUSE

BRIDGEDBRIDGED

8 9

Power Indicator Lamps

After initial set-up, the amplifier should not require any

further adjustment unless there is a change in the car

stereo or speaker system with which it is used.

If activated by a rise in emperature, the unit will resume

operation after cooling off to a normal operating range.

If activated by an overload condition, the source of the

overload must be found and corrected to resume

operation of the amplifier.

Most overload conditions are caused by mis-wiring or

operation into incorrect speaker loads. Re-check all

wiring and connections if this situation occurs and

correct as necessary.

The Power Indicator Lamps will light to indicate that the unit

is connected to the battery and that the Remote

Turn-On terminal is receiving +12 volts, thus turning on the

amplifier.

Protection Mode LED

This LED illuminates red to indicate that the self-protection

circuits have been activated and have shutoff operation of

the amplifier. The protection circuits may be triggered

by the temperature of the unit rising above a safe level

or by an overload condition.

Level (Gain) Controls

The amplifier is capable of operating from sources

supplying a wide range of input levels. The Level controls

should initially be set to the mid-rotation position.

If it is found that there is not enough output even when

the volume control on the car stereo is at its maximum

setting, adjust the Level control to increase the output

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