Audiovox Prestige PAB-250R User manual

OwOw
OwOw
Ownene
nene
ner'sr's
r'sr's
r's
ManualManual
ManualManual
Manual
Model PAB-250R
200 Watt Stereo Amplifier

INDEX
Specifications................................................................................1
Precautions...................................................................................2
InstallationInstructions.................................................................3
Wiring Instructions ................................................................4 - 5
StereoandMixed-MonoInput WiringDiagram.............................6
StereoandMixed-MonoOutput WiringDiagram.........................7
Mono (Bridged) Input Wiring Diagram ...................................... 8
Mono (Bridged) Output Wiring Diagram ................................... 9
Operation...........................................................................10-11
Warranty............................................................ InsideBackCover

HIGH PERFORMANCE STEREO AMPLIFIER
This power amplifier has been designed to provide high quality performance with
aminimumof maintenance. However,it'sperformance willonly beasgood asthe
careand quality of componentswith which it isinstalled. We therefore advise that
you read these instructions very carefully to familiarize yourself with the product
and it's features.
Shouldyou requireassistance withthe installationor wiringof thisunit, pleasecall
our toll-free "HELP" line at 1-800-645-4994 during the days/hours shown.
Monday - Friday
Saturday
8:30am - 7:00pm Eastern
9:00am - 5:00pm Eastern
1-800-645-4994
HELP!
-1-
SPECIFICATIONS
*Due to continuing improvement, Audiovox reserves the right to change features and design without notice.
Maximum Output Power:
Stereo Operation:
Mono Operation:
Output Power @ 0.05% T.H.D.:
Stereo Operation:
Mono Operation:
Output Impedance:
Frequency Response:
Channel Separation:
Signal / Noise Ratio:
100 watts x 2
200 watts x 1
50 watts RMS x 2
125 watts RMS x 1
2 - 8 ohms (stereo)
4 - 8 ohms (mono)
10 - 50,000 Hz. ± 1 dB
50 dB
90 dB (A-Weighted)
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 dB or +18 dB @ 45 Hz.
(selectable)
12 volts, negative ground
20 amps.
10-3/4" x 2-3/8" x 6-3/4"
273 mm x 62 mm x 172 mm

PRECAUTIONS
-2-
1. Althoughthisunitis designedwithbuilt-inself-protectioncircuits, theremaybeapossibilityofdamageifitisnotwired
correctly. Please follow the wiring instructions carefully for the type of system being used.
2. Thelastleadtobeconnectedisthewiretothepositive(++
++
+)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 mustmust
mustmust
must be of a thick enough gauge to provide this voltage to the amplifier. We recommend #10#10
#10#10
#10
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)
oftheunit. Useofspeaker(s)notratedfortheoutputofthisamplifiermaycausedamagetoorfailureofthespeaker(s)
for which Audiovox will not be liable.

INSTALLATION INSTRUCTIONS INSTALLATION DIAGRAM
1. Select a mounting area where the amplifier will
havesufficientaircirculationfor proper cooling.
Inadequate air circulation will cause the
temperature of the amplifier to rise and will
trigger the thermal protection mode.
2. Placetheamplifieronthemountingsurfaceand
markthelocationsofthefourmountingholesas
shown in the illustration.
3.Removetheamplifieranddrilla1/8"holeateach
of the four locations.
CAUTION:CAUTION:
CAUTION:CAUTION:
CAUTION: Before drilling the holes, look at the
underside of the mounting surface. Always
checkcarefullytoavoiddrillingintowiring,braces,
fuel or brake lines. CHECK BEFORE YOUCHECK BEFORE YOU
CHECK BEFORE YOUCHECK BEFORE YOU
CHECK BEFORE YOU
DRILL !DRILL !
DRILL !DRILL !
DRILL !
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
surfaceusingtheself-tapping screws provided.
5. Attachthe plastic end panels to the amplifier by
removing the protective paper from the self-
adhesivestrips on the bottomof the panels and
pressing them into position on the amplifier. -3-
MOUNTING SURFACE
1/8" DIA.
HOLE
SELF-TAPPING SCREW
END PANELS
RUBBER WASHERS
REMOTECONTROL
OFF 12dB 18dB

-4-
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 both types. Please refer to the
appropriate diagrams for the system configuration you are using.
Thepowerandspeakerwireconnectionsforthisamplifieraremadeviascrewtightenedterminalblocks. Loosenthescrew
for the connection to be made and fully insert the wire (strip 1/2" of insulation from the end) under the respective screw
onthesidepanel(crimp-on"U"terminalsareprovidedtosimplifywiringandwerecommendtheiruse). Tightenthescrew
down to secure the wire.
1. Power Connection1. Power Connection
1. Power Connection1. Power Connection
1. Power Connection
The battery terminal (+12V) must be connected directly to the positive terminal of the vehicle battery to provide an
adequatevoltagesourceandminimizenoise. Connectingthebatteryterminalleadtoanyotherpoint(suchasthefuse
block) willreduce thepower outputand maycause noiseand distortion. Useonly #12#12
#12#12
#12 gaugeorthicker(smallergauge
#) wire for this lead and connect it to the terminal of the battery after all other wiring is completed.
2. Ground Connection2. Ground Connection
2. Ground Connection2. Ground Connection
2. Ground Connection
The ground terminal (GND) connection is also critical to the correct operation of the amplifier. Use a wire of the same
gaugeas thepower connection(#12#12
#12#12
#12or thicker)andconnectit betweenthegroundterminal (GND)oftheamplifier 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 Connection3. Remote Turn-On Connection
3. Remote Turn-On Connection3. Remote Turn-On Connection
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.

-5-
4. Speaker Connections4. Speaker Connections
4. Speaker Connections4. Speaker Connections
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, #18 gauge wire should be used for the speaker leads but in
no case thinner than #20 gauge. For leads in excess of 10 feet, #16 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
thepolarityofthe corresponding terminals on the amplifier. DO NOTDO NOT
DO NOTDO NOT
DO NOT ground any speaker leads to thechassisofthe
vehicle.
5. Input Connections5. Input Connections
5. Input Connections5. Input Connections
5. Input Connections
Thisamplifierfeaturesbothhighandlow-levelinputcapability. Useeitherthelow-levelorhigh-levelinputs,notboth.
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 4-pin adaptor harness as shown in the
diagram (shielded cable is not required for this application) and plug the connector into the mating High-Level Input
connector on the amplifier. Carefully splice and insulate all wire connections.
WIRING INSTRUCTIONS
CAUTION:CAUTION:
CAUTION:CAUTION:
CAUTION: Use either the low-level or the high-level inputs on the amplifier.
DO NOTDO NOT
DO NOTDO NOT
DO NOT use both input levels at the same time.

4-PIN
CONNECTOR
IMPORTANT
USE EITHER HIGH-LEVEL OR
LOW-LEVEL INPUTS, NOT BOTH.
HIGH-LEVEL
(SPEAKER) OUTPUTS
CAR STEREO
USE THIS INPUT WIRING WITH
OUTPUT WIRING ON PAGE 7
-6-
STEREO AND MIXED-MONO INPUT WIRING DIAGRAM
RCA TYPE
SHIELDED CABLE
(NOT INCLUDED)
RIGHT +
54
RIGHT -
3
2
LEFT -
LEFT +
LOW-LEVEL
RCA OUTPUTS
WHITE w/BLACK STRIPE
WHITE
GRAY
GRAY w/BLACK STRIPE
LEFT
RIGHT
1
REMOTECONTROL
6
OFF 12dB 18dB

EXISTINGSCREWORBOLT
CLEAN PAINT, RUST, DIRT
OR GREASE FROM AREA
FOR GOOD CONNECTION
GROUNDED METAL
SECTIONOFVEHICLE
AUTO-ANTENNALEAD
-7-
USE THIS OUTPUT WIRING WITH
INPUT WIRING ON PAGE 6 STEREO AND MIXED-MONO OUTPUT WIRING DIAGRAM
LEFT
SPEAKER
m
-
m12 VOLT
VEHICLE
BATTERY CHASSIS
GROUND
USE #10 GAUGE
WIRE (SEE TEXT)
+
CAR STEREO
STEREO MODE : 2-8 OHMS
MIXED-MONO MODE : 4-8 OHMS
MIXED-MONO SPEAKER OR
SUB-WOOFER WITH CROSSOVER
4-8 OHMS
RIGHT
SPEAKER
STEREO MODE : 2-8 OHMS
MIXED-MONO MODE : 4-8 OHMS
CONNECT THIS
WIRE LAST
-
m
m
+
m
+
m
-7
30
20

MONO (BRIDGED) INPUT WIRING DIAGRAM
CAR STEREO
LOW-LEVEL
RCA OUTPUTS
45
23
1
IMPORTANT
USE EITHER HIGH OR LOW-LEVEL
INPUTS, NOT BOTH.
HIGH-LEVEL
(SPEAKER) OUTPUTS
+
-
+
-TO 2nd AMPLIFIER
4-PIN
CONNECTOR
-8-
USE THIS INPUT WIRING WITH
OUTPUT WIRING ON PAGE 9
WHITE w/BLACK STRIPE
WHITE
GRAY
GRAY w/BLACK STRIPE
REMOTECONTROL
6
OFF 12dB 18dB
"Y" RCA TYPE
SHIELDED CABLE
(NOT SUPPLIED)
TO 2nd
AMPLIFIER