Audiovox PX400 Owners Manual

PX-400

2/3/4-Way Active

Crossover

Owner'sOwner's

Owner's

Owner'sOwner's
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Manual

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INDEX

Specifications ............................................................................1

Installation Instructions .............................................................2

Wiring Instructions ...............................................................3 - 4

2-Way System Wiring Diagram ..............................................5

3-Way System Wiring Diagram ..........................................6 - 7

4-Way System Wiring Diagram .........................................8 - 9

Operation .........................................................................10 - 11

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

HIGH PERFORMANCE 2/3/4-WAY ACTIVE CROSSOVER

This unit 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 of 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
Saturday

8:30am - 7:00pm Eastern
9:00am - 5:00pm Eastern

Frequency Response:
Signal / Noise Ratio:

Distortion:
Input Impedance:
Output Impedance:
Bass Boost:
Crossover Slope:

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

10 - 50,000 Hz. ± 3 dB
92 dB (A-Weighted)

0.01%
10K ohms
100 ohms
8 dB @45 Hz.
18 dB/octave

Crossover Frequency

Subwoofer Low-Pass:
Rear Mid High-Pass:
Midrange High-Pass:
Midrange Low-Pass:

High High-Pass:
Supply Voltage:
Fuse Rating:
Dimensions (W x H x D):

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30 - 250 Hz.
60 - 1,000 Hz.
250 - 500 Hz.
2,000 - 10,000 Hz.
1,000 - 10,000 Hz.
12 volts D.C., negative ground
1 amp.
8-1/4" x 1-1/4" x 7"

210 mm x 31 mm x 179 mm

INSTALLATION INSTRUCTIONS

1. Select a mounting area where the crossover
will be accessible for occasional adjustment of
control settings.

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

3. Remove the crossover 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 crossover to the mounting surface
using the self-tapping screws and washers
provided.

5. Select a mounting area where the Remote
Subwoofer Level Control will be accessible for
adjustment of the control setting.

6. In similar manner to steps 2 through 4, drill 2
mounting holes and use the self-tapping screws
and washers to secure the Remote Control to
the mounting surface.

INSTALLATION DIAGRAM

SELF-TAPPINGSCREW

1/8" DIA.
HOLE

MOUNTING SURFACE

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WIRING INSTRUCTIONS

The wiring of your crossover will depend on the system and speakers you are using but will either be a 2-way (bass and midrange/high), 3-way
(bass, midrange and high) or 4-way (bass, rear midrange, midrange and high) application using 2 or 4 channels of input from the car stereo.
The following pages illustrate the input and output wiring for these types. Please refer to the appropriate diagram for the system configuration
you are using.

The power connections for this unit are made via screw tightened terminals. 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. Tighten the screw down to secure the wire.

1. Power Connection

The battery terminal (+12V) 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) may cause noise and distortion. Use

#18 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 crossover. Use a wire of the same gauge as the power
connection (#18) and connect it between the ground terminal (GND) of the unit 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 crossover 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 crossover 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.

4. Input Connections

This crossover features low-level input capability. If the car stereo has 2 channels of low-level output, connect them to the "FRONT INPUT"
jacks (see pages 5, 6 and 8). If the car stereo has 4 channels of low-level output, connect them to the "FRONT INPUT" and "REAR INPUT"
jacks (see pages 7 and 9).

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