Audiovox 1284815 User Manual
10-BAND 80 WATT GRAPHIC
EQUALIZER/AMPLIFIER
AMPLIFICATEUR/EQALISEUR GRAPHIQUE
À 10 BANDES DE 80 WATTS
ECUALIZADOR GRAFICO/AMPLIFICADOR
DE 10 BANDAS Y 80 VATIOS
OWNER'S MANUALOWNER'S MANUAL
OWNER'S MANUAL
OWNER'S MANUALOWNER'S MANUAL
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MANUAL DEL PROPIETARIOMANUAL DEL PROPIETARIO
MANUAL DEL PROPIETARIO
MANUAL DEL PROPIETARIOMANUAL DEL PROPIETARIO
AMP-772
GENERAL INSTRUCTIONS
PRECAUTIONS: IMPORTANT - READ THIS SECTION CAREFULLY
A. THIS UNIT IS NOT DESIGNED FOR USE WITH "FLOATING-GROUND" OR "BRIDGE-AUDIO" OUTPUT RADIOS
OR STEREO SYSTEMS. If in doubt, consult owner's manual of your stereo system or store where purchased.
Damage to stereo system and/or this unit may result if this unit is wired to a "Floating-Ground" or "Bridged-Audio"
system.
NOTE: If the owner's manual of your existing stereo radio/tape player advises NOT TO GROUND YOUR SPEAKERS, you can be reasonably sure that the system is a Floating-Ground or Bridge-Audio type and should not be
used with this unit.
B. Due to the extremely high output power of this unit it is necessary that speakers having a minimum power rating of
20 watts be used. Use of lesser rated speakers may cause damage to speakers.
C. DO NOT ground any speaker to a metal part of the car. Use two wires for each speaker (one positive, one negative)
and return and splice all wires to the amplifier speaker output as shown in the wiring diagrams. Failure to follow this
wiring method will damage the amplifier.
D. Avoid operating unit at maximum power levels for prolonged periods as the speakers may be damaged.
E. This unit is designed for 12 volt DC negative ground electrical systems only.
SPECIFICATIONS
Output Power:
Frequency Response:
Output Impedance:
Operating Voltage:
80 watts maximum (40 watts x 2 channels)
50Hz-20,000 Hz. ±1 dB
4 or 8 ohm speakers
12 volts D.C., Negative Ground
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INSTALLATION
1. Assemble the two side-mount support brackets to the
sides of the amplifier using the four black screws provided. CAUTION: Do not use any screw other than
those provided as a longer screw may short-circuit interior components.
2. Using the amplifier as a template, locate the desired
mounting area below dash (or on console). NOTE: Before deciding on a mounting location consider these
points:
A. Is it accessible for easy operation while driving?
B. Is it a good solid mounting surface?
C. Will all wiring reach to their intended locations?
D. Will it obstruct or interfere with passengers or other
controls?
3. Having selected a mounting location, mark the two
mounting holes on the mounting surface.
4. Place unit in position and secure using the two pan
head screws provided.
5. Continue on to wiring instructions.
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POWER WIRING OF
EQUALIZER-AMPLIFIER
INPUT WIRING TO AMP-772
EXISTING CAR STEREO
(COMMON-GROUND OUTPUT TYPE)
AMP-772
BLACK
CONNECT TO
GROUNDED
METAL PART OF
CAR
ORANGE
w/WHITE STRIPE
CONNECT TO
SWITCHED
+12 SOURCE
AMP-772
SPEAKER
OUTPUTS OF
CAR STEREO
RIGHT +
RIGHT -
LEFT +
LEFT -
SPLICE
GRAY
w/WHITE STRIPE
GRAY
BROWN
w/WHITE STRIPE
BROWN
NOTE: If your car stereo has four speaker outputs (left front, left rear, right
front and right rear) you can usually combine the front output wires
with the rear output wires to make a single output (example: Combine Left Front + with Left Rear + to make a single LEFT + output).
CAUTION: Before doing this, check your radio's manual since some
outputs cannot be combined. In this case, only use the front or
rear outputs alone.
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OUTPUT WIRING FROM AMP-772 TO SPEAKERS
CAUTION: DO NOT GROUND ANY SPEAKER WIRE TO CAR BODY.
2-SPEAKER SYSTEM
USE SPEAKERS RATED TO ACCEPT THE OUTPUT POWER OF THE AMP-772.
4-SPEAKER SYSTEM
LEFTSPEAKER
SPLICE
WHITE
RED
VIOLET
AMP-772
BLUE
YELLOW
LIGHTGREEN
SPLICE
RIGHTSPEAKER
LEFTFRONTSPEAKER
SPLICE
LEFTREARSPEAKER
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WHITE
VIOLET
RED
AMP-772
RIGHTFRONTSPEAKER
BLUE
LIGHTGREEN
YELLOW
RIGHTREARSPEAKER
SPLICE
OPERATION
POWER ON-OFF SWITCH
To turn amplifier on simply depress the power button. The power indicator
lamp will illuminate to indicate the amplifier is operating. With the switch in
the outward position, normal stereo operation is resumed and the amplifier is
off.
EQUALIZER TONE CONTROLS
Ten slide controls have been built-in for total tone control of the entire audio
reproduction range. These controls will vary the tone range from Bass through
Treble with the Bass controls at the left, the Mid-Range controls in the middle
and the Treble controls at the right.
Since tone quality is an individual application, we recommend you start all
ten controls in the mid-position. With all ten controls at the mid-position adjust each control to your personal taste. By moving the control upward you
will emphasize that range. (example-Bass control moved upward will emphasize Bass tones, moving it down will de-emphasize Bass tones).
A visual inspection of the setting of the ten controls will provide a graphic
illustration of your actual response curve showing which ranges are emphasized and which are de-emphasized. Each slide control can vary response
(from the mid-position detent) upward by 12db or downward by 12 db, for a
total variation range of 24 db.
NOTE: For the best operation of the amplifier, set the tone control of your
stereo system at a mid-position.
LED POWER LEVEL METERS
These LED's will sequentially illuminate from one to five providing a relative
indication of the peak power output from the unit. Power output is controlled
by the volume control of your in-dash stereo system.
VOLUME
The volume level of the amplifier is controlled by the volume control of your
existing stereo system. Avoid setting volume at maximum levels since you
are at maximum distortion levels which the amplifier will reproduce.
FRONT/REAR FADER CONTROL
When wired to four speakers as shown in the wiring diagram for 4 speakers,
the fader control will vary volume level to either the two front or two rear
speakers depending upon the setting of the control. Adjust the Fader control
for balanced front-to-rear sound. NOTE: Fader control will operate with unit
"off" for use in normal stereo operation.
The balance control on your existing stereo system will control sound level to
the two left and the two right speakers. Adjust this control for balanced left-
to-right sound. NOTE: If your existing stereo system had both Left-Right and
Front-Rear controls you will find that the method of wiring it to the AMP-772
has made the Front-Rear control inoperable. The front-rear fader control on
the AMP-772 will operate in place of it. You will also notice that even with
amplifier off you will not have use of the stereo's front-rear control. The fader
control on the AMP-772 will still operate even though the unit is off.
When wired to only two speakers, the built-in fader control on the amplifier
will not operate. Only the existing Balance control on your stereo sound
system will work. Use the Balance control as you normally would and set the
fader control to the mid-position.
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