20-Watt AC/Mobile PA  (320-2041)      Operation        Faxback Doc. # 15376
Amplifier

CONNECTING POWER

You can power your amplifier from standard AC power or from a 12-volt DC
power source (such as your vehicle's battery).

Using AC Power

To use standard AC power, simply plug the supplied AC cord into any
standard AC outlet.

Using Vehicle Battery Power

You can power the amplifier from your vehicle's 12-volt battery.

CAUTIONS:  The vehicle must have a negative-ground electrical system.  If
           you are unsure about what type of electrical system the vehicle
           has, ask your vehicle dealer.

           Disconnect the AC cord before you connect the DC power cable.

To use 12-volt DC power, connect the supplied DC power cable's small end
to the amplifier's 12V NEGATIVE GND jack.  Then connect the cable's other
end to your vehicle's cigarette-lighter socket.

Replacing the DC Cable's Fuse

The cable's 4A, 125-volt in-line fuse protects your amplifier from voltage
surges.  If the amplifier's power indicator does not light when you press
POWER, check the fuse.  If it is blown, replace it with a 4-amp, 125-volt
fuse (such as Cat. No. 270-1010, not supplied.)

To replace the fuse, unscrew the tip of the cigarette-lighter plug.  Then
remove the old fuse and insert the new fuse.  Secure the fuse by
reattaching the plug's tip.

Replacing the Amplifier's Fuse

The fuse (located on the back of the amplifier) protects your amplifier
from power (voltage or current) surges.  If the POWER indicator does not
light when you press POWER, the fuse might be blown.

CAUTION:  Use only an identical 5 x 20 mm, fast-acting, 2-amp, 250-volt
          fuse (such as Cat. No. 270 1052).

Follow these steps to replace the amplifier's fuse.

1.  Unplug the amplifier's power cord.

2.  Using a flatblade screwdriver, push and turn the fuse holder's cap
    counterclockwise until the fuse holder pops out.

3.  Remove the fuse holder and replace the fuse.

4.  Using a flatblade screwdriver, push and turn the fuse holder's cap
    fully clockwise to replace it.

VEHICLE INSTALLATION

Before you install the amplifier in your vehicle, read the following hints
to help you select a proper mounting location:

    Choose a mounting location in your vehicle where all the amplifier's
    controls are easy to reach but do not interfere with the operation of
    the vehicle.  The most common location is under the dashboard directly
    over the drive shaft hump.

    Be sure all wires and cables are away from the brake, clutch, and
    accelerator.

    Be sure the mounting location allows enough leg room for passengers.

    Mount the amplifier so you can easily remove it for service or
    maintenance.

    Do not mount the amplifier in the air stream path of a heater or air
    conditioner.

After you select a mounting location, follow these steps to mount the
amplifier in your vehicle.

1.  Position the left and right mounting brackets on the desired mounting
    surface and mark the mounting holes.

2.  Use a drill with a 1/8-inch bit to drill holes on the marked location.

3.  Mount the brackets using a universal mounting bracket set (Radio Shack
    Cat. No. 270-023).

4.  Attach the amplifier to the brackets using the machine screws.

USING THE AMPLIFIER

1.  Set PHONO/AUX/.CD on the back of the amplifier to PHONO or AUX.CD
    depending on which input source you want to mix.

NOTES:  The microphones connected to MIC 1 and MIC 2 and the audio input
        source connected to either the PHONO or AUX.CD input jacks are all
        used at the same time.

        You can connect input sources to PHONO and AUX.CD at the same time,
        but you can use only one source at a time.

2.  Press POWER.  The POWER indicator lights.

3.  Start play on the audio input source.

4.  Set MASTER VOLUME to 10 (mid position).

5.  Adjust MIC 1, MIC 2, and PHONO/AUX.CD to the desired volume and
    balance.

6.  Adjust master volume to the desired level.

CAUTION:  Be careful not to raise the volume level too high.  Doing so
          might overload the system.

7.  Adjust TONE toward LOW to adjust the sound toward a low frequency
    tone, or toward HIGH to adjust it toward a high frequency tone.

NOTES:   Leaving TONE set at the mid position produces a flat, unadjusted
         tone.

         If feedback occurs, turn TONE toward LOW or turn down the volume.

8.  Press POWER to turn off the amplifier.


(br/all-05/30/95)