INSTALLATION INSTRUCTIONSINSTALLATION INSTRUCTIONS
INSTALLATION INSTRUCTIONS
INSTALLATION INSTRUCTIONSINSTALLATION INSTRUCTIONS
MODEL PMC-50MODEL PMC-50
MODEL PMC-50
MODEL PMC-50MODEL PMC-50
by AUDIOVOX
CD CHANGER COMMANDER/FM MODULATORCD CHANGER COMMANDER/FM MODULATOR
CD CHANGER COMMANDER/FM MODULATOR
CD CHANGER COMMANDER/FM MODULATORCD CHANGER COMMANDER/FM MODULATOR
INTRODUCTION
The PMC-50 FM Modulator/Wired Commander is designed to permit operation of compatible Prestige CD changers through
the FM section of any car stereo system. Please check with your Prestige car stereo specialist for recommendations of the CD
changer models that will work with the PMC-50. Refer to the Installation Instructions included with the CD changer for specific
details on the mounting procedures and adjustments of the changer itself.
SYSTEM WIRING
+12 volt Accessory/Switched
(ORANGE w/WHITE STRIPE)
Connect this wire to a point which is energized when the
ignition switch is turned to the "ON" or "ACCESSORY"
position.
+12 volt Constant (GREEN w/WHITE STRIPE)
Connect this lead to the cable to which power is continuously
supplied and which has been passed through the vehicle's
fuse block.
Ground (BLACK w/WHITE STRIPE)
Screw this to a metal part of the vehicle. Clean connecting
area of paint, dirt, etc. A poor ground connection can cause
incorrect or noisy operation.
Wired Commander
RF output
(88.3, 88.7, 89.7
or 89.9 MHz)
Antenna
socket
To +12V ACC,
Speakers, etc.
FM Radio
FM
Modulator
Fuse 3A
To Car
Antenna
ADJUSTMENT OF FM MODULATOR AUDIO LEVEL
The audio level from the modulator is factory-set to provide the correct volume balance between
radio and CD changer in the majority of installations and usually will not require any adjustment.
If, however, a large difference in volume level is noted when switching between CD changer and
FM radio operation, the audio level from the CD changer may be adjusted as follows:
1. With the CD changer off, tune to an FM station and adjust the volume control on the radio to
a normal listening level.
2. Leaving the volume control at the setting, turn on the CD changer and tune the radio to the
modulator output frequency (88.3, 88.7, 89.7 or 89.9 MHz.).
3. Select a LOUD section of the CD. If the volume level is comparable to that of the FM station
in step 1, no adjustment is necessary. If it is noticeably louder or more quiet than that of the
radio station, usea#0Phillips screwdriver to adjust the "AUDIO LEVEL" control on the
modulator so that the CD changer volume is comparable to that of the radio station.
IMPORTANT: If the modulator audio level is adjusted too high, it may result in unacceptable
levels of distortion during loud sections of CD's. If set too low, it may result in poor signal/noise
levels during CD changer operation.
CD changer
#0 Phillips
Screwdriver
FM
Modulator
Audio Level
Adjust
Form No. 128-4825
To FM Radio
Antenna input
From Antenna
VEHICLE WIRING AND COMPONENT MOUNTING
+12V Accessory / Switched (ORANGE w/WHITE STRIPE)
Connect this wire to a terminal which is energized when the
ignition switch is turned to the "ON" or "ACCESSORY"
position
+12V Constant (GREEN w/WHITE STRIPE)
Connect this wire to a terminal which is always energized.
FM Radio
FM
Modulator
Controller
Connection Cord
RCA Audio Cable
.
Fuse
Ground (BLACK w/WHITE STRIPE)
Attach this wire to the chassis of the car.
Be sure that the surface is free of paint,
and is not rusty. If a proper ground
connection is not made, the CD changer
may not operate correctly and stray noise
may be picked up by the unit.
Data Cable
CD Changer
MOUNTING THE FM MODULATOR
Install the FM Modulator to the mounting surface with the
included self-tapping screws (M3 x 12).
MOUNTING THE WIRED COMMANDER
1. Determine where the commander unit will be located.
2. Be sure that the mounting surface where the commander
unit will be located is clean and dry.
3. Remove the protective paper from the back of the Velcro
strip.
4. Apply the commander unit to the desired location.
(M3 x 12)
Wired Commander
FM Modulator