MPA-40 20-Watt PA Amplifier
(320-2001)                 Preparation                Faxback Doc. # 51503

Presetting The Controls

WARNING:  A sudden high output from the amplifier could damage your
          hearing or the speakers connected to the amplifier's output.

To avoid accidentally overdriving a channel or prematurely amplifying an 
audio input, set all the amplifier's front panel controls to their lowest 
settings.

To avoid sudden audio from the input sources, be sure all audio devices 
are turned off before you connect them to the amplifier.

Choosing A Location

Choose a location with adequate ventilation.  Do not place the amplifier 
on thick carpeting or cushions (which can restrict the air flow) or near a 
heat source, such as a heat vent or radiator (which can cause the 
amplifier to overheat).

Making Connections

Be sure you connect all auxiliary equipment and speakers before connecting 
and turning on power.

     AUX/CD Input Jack - Connect any high-level sound source (such as a
                         tape deck, CD player, or receiver).  To connect a
                         stereo audio source to this jack, use a shielded
                         Y-adapter (not supplied; available at your local
                         RadioShack store).

      PHONO Input Jack - Connect a turntable with a moving magnetic
                         cartridge.   To avoid sound distortion, do not
                         connect a high-level audio input source to this
                         jack.

           GROUND Jack - Connect the ground wire (usually black or green)
                         from your turntable to this screw to avoid a low
                         frequency hum.  You can also use this screw to
                         ground any other system connection.

   PHONO/AUX/CD Switch - Select the input source.  Even if you connected
                         auxiliary equipment to both the PHONO and AUX/CD
                         input jacks, you can use only one source at a
                         time.

Speaker Push Terminals - Press the appropriate tab to open a terminal.
                         Insert the end of a speaker wire into the
                         opening, then release the tab to close the
                         terminal and secure the wire (See "Connecting
                         Speakers" in Faxback Doc. # 51504).

         AC Power Cord - To use AC power, simply plug this attached cord
                         into a standard AC outlet.

 4A/12V (4-Amp/12-Volt - Connect the supplied DC power cable's barrel plug
        DC Power) Jack   to this jack if you want to temporarily power the
                         amplifier from your vehicle's 12-volt battery.
                         Then connect the cable's other end to your
                         vehicle's 12-volt accessory socket (such as a
                         cigarette lighter socket).

CAUTIONS:  Your vehicle must have a negative ground electrical system.  If
           you are not sure it does, check with your vehicle dealer.

           Unplug the AC power cord before you connect the DC power cable.
           Likewise, disconnect the DC power cable before you plug in the
           AC power cord.

(EB 2/26/99)