Audiovox PAB-450R User Manual
Model PAB-450R
400 Watt 4-Channel Amplifier
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INDEX
Specifications ................................................................................1
Precautions ................................................................................ 2
Installation Instructions .................................................................3
Wiring Instructions ................................................................ 4 - 5
4-Channel and Mixed-Mono Input Wiring Diagram .................... 6
4-Channel and Mixed-Mono Output Wiring Diagram ................. 7
3-Channel Input Wiring Diagram ................................................ 8
3-Channel Output Wiring Diagram ............................................. 9
2- Channel Mono (Bridged) Input Wiring Diagram .................... 10
2-Channel Mono (Bridged) Output Wiring Diagram ................... 11
Operation ...........................................................................12 - 13
Warranty ....................................................................... Back Cover
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 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
Maximum Output Power:
4-Channel Operation:
2-Channel Operation:
Output Power @ 0.05% T.H.D.:
4-Channel Operation:
2-Channel Operation:
Output Impedance:
Frequency Response:
Channel Separation:
Signal / Noise Ratio:
* Due to continuing improvement, Audiovox reserves the right to change features and design without notice.
100 watts x 4
200 watts x 2
50 watts RMS x 4
125 watts RMS x 2
2 - 8 ohms (stereo)
4 - 8 ohms (mono)
10 - 50,000 Hz. ± 1 dB
50 dB
90 dB (A-Weighted)
-1-
Input Impedance:
Input Sensitivity:
Filter Types:
Filter Slope:
Filter Crossover:
Bass Boost:
Supply Voltage:
Fuse Rating:
Dimensions (W x H x D):
low-level 10K ohms
high-level 100 ohms
low-level 200 mv. - 4 v.
high-level 2 - 10 v.
low-pass and hi-pass
18 dB/octave
50 - 180 Hz. (variable)
+12 or 18 dB @ 45 Hz.
(selectable)
12 volts, negative ground
20 amps. x 2
10-3/4" x 2-3/8" x 11-1/2"
273 mm x 62 mm x 290 mm
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
mustmust
#10#10
#10
#10#10
mustmust
gauge wire or larger (smaller gauge #) for the battery and ground leads.
6. Make certain that the speaker(s) to be used with this amplifier are capable of handling 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.
-2-
INSTALLATION INSTRUCTIONS
INSTALLATION DIAGRAM
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:CAUTION:
CAUTION: Before drilling the holes, look at the
CAUTION:CAUTION:
underside of the mounting surface. Always
check carefully to avoid drilling into wiring,
braces, fuel or brake lines.
YOU DRILL !YOU DRILL !
YOU DRILL !
YOU DRILL !YOU DRILL !
CHECK BEFORECHECK BEFORE
CHECK BEFORE
CHECK BEFORECHECK BEFORE
4. Apply a self-adhesive rubber washer to the
bottom of the amplifier at each of the 4 screw
locations. Secure the amplifier to the mounting
surface using the self-tapping screws provided.
5. Attach the plastic end panels to the amplifier by
removing the protective paper from the selfadhesive strips on the bottom of the panels and
pressing them into position on the amplifier.
END PANELS
SELF-TAPPING SCREW
1/8" DIA.
HOLE
RUBBER WASHERS
MOUNTING SURFACE
-3-
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