Realistic 120-1959 User Manual

60-Watt Stereo Equalizer/Booster
(120-1959) Features Faxback Doc. # 46781

Your Realistic 60 Watt Stereo Equalizer/Booster adds increased dynamic
range and clean, high-volume sound reproduction to your auto-sound system.
But that is only part of what this unit can do. The 7 band equalizer lets
you tailor your system's sound to your vehicle's acoustics and your
personal taste. And, the equalizer/booster's many other features (listed
below) let you easily expand and control your auto-sound system.

7 Band Equalizer with - gives you control of the basic frequency ranges
slide Controls of music. The slide controls provide an instant
visual representation of the shape you give the
sound.

Built-In Fader - lets you easily control the balance between
front and rear speakers if you have a four
speaker system.

Two Types of inputs - let you use the equalizer/booster with a radio
or tape player that has line outputs jacks or
that only has standard speaker outputs.

CD input - lets you easily connect a portable CD player
(or any other portable unit with a headphones
jack) to the equalizer/booster.

Hi/Lo Output Power Meter - shows the output power being used by the left
and right channels of your system. You can
set the meter range for high or low, depending
on your average listening level.

Speaker Impedance Control- lets you adjust the booster for optimum
performance with 4- or 8-Ohm speakers.

60-Watt Stereo Equalizer/Booster
(120-1959) Installation Faxback Doc. # 46782

Included with Your Equalizer/Booster

Your equalizer/booster comes with the following items that are necessary
for connection and mounting. Be sure to unpack these items before you
dispose of the packing materials.

Mounting Brackets and Hardware Quantity

L-Bracket ..................... 1

M4 Machine Screw .............. 4

M4 Flat Washers ............... 4

M5 Flat Washer ................ 4

R-Bracket ..................... 1

M4 Spring Washer .............. 4

Self-tap Screw ................ 4

M5 Spring Washer .............. 4

Use these to mount the equalizer/booster below the dash of your vehicle.
See "Mounting the Equalizer/Booster" below.

Installation

Note: You can connect this equalizer/booster in many different ways. You
can even use it with BLT (balanced transformerless) circuitry.
However, improper connections can damage this unit and/or other
components in your auto sound system. If, after completely reading
this manual, you do not feel confident about installing this unit
and have questions such as . . .

Does my vehicle have a 12 volt, negative ground electrical
system?

Which wire is the power wire?

How do I connect a wire to the fuse box?

. . . we strongly urge you to have this unit installed by a
professional auto sound installer.

Choosing The Mounting Location

We suggest that you connect the wiring and confirm that the equalizer/
booster operates properly with your system before you actually mount it in
your vehicle. However, you should choose the mounting location first.
Then, when the unit is connected and working properly, you can mount it
without re-routing the wires.

Choose a mounting location below the dash that:

Is as near as possible to your vehicle's radio, tape player, or other
main auto sound component.

Does not interfere with operation of the vehicle.

Is not directly in front of a heating vent.

Allows drilling of mounting holes, without damaging other vehicle
components.

Allows enough leg room for passengers.

Allows convenient and safe routing of wires.

Then, connect the wiring as follows with the equalizer/booster as close as
possible to the chosen location.

Wiring Connections

CAUTION: If the wiring harness (for power and speakers) on your older
existing radio/tape player is not compatible with your new
RadioShack equalizer/booster's wiring harness, we suggest that
you modify the existing wiring using adapters available at your
local RadioShack store. Or, you can have a qualified technician
modify the older wiring for you. Modification of your new
RadioShack unit will void its warranty.

Connecting Power/Speakers to the Equalizer/Booster

1. Before you make any connections, disconnect the positive (+) wire from
your vehicle's battery. This reduces the possibility of damage to your
system during installation.