MPA-250 250-Watt Stereo Public Address Amplifier
(320-2004)                 Preparation                Faxback Doc. # 51680

Presetting The Controls

Before you begin making connections or using your amplifier, preset the 
audio input source's and the amplifier's controls to avoid overdriving a 
channel or producing sudden unexpected loud sounds.

WARNING:  To prevent possible hearing loss, set the audio input device's
          and amplifier's controls as indicated in the following sections.
          After you turn on the amplifier or change the program source,
          adjust the controls to a comfortable listening level.

Presetting Audio Input Devices

Always set the power control for an audio mixer or preamplifier you 
connect to the amplifier to OFF.

Presetting the Amplifier

Set the amplifier's controls to these levels:

      CONTROL -------- SETTING

       POWER ........... Out
    SPEAKER A/B ........ Out
   LEFT and RIGHT ...... MIN
    METER RANGE ........ Out

Mounting The Amplifier

You can mount the amplifier in a standard-sized audio equipment rack or on 
a desk, shelf, or table.  Before you use your amplifier, be sure you place 
it in a location with adequate ventilation.  Do not put it on thick 
carpeting (which can restrict air flow) or near a heat source such as a 
heat vent or radiator (which can cause it to overheat).

To mount the amplifier on a standard-sized audio equipment rack, drive and 
tightly secure mounting screws (not supplied) through the mounting holes.

Placing The Speakers

Speaker placement depends on your room's size and arrangement.  We 
recommend you play a wide-range recording and experiment with speaker 
placement until you find the locations that result in the best sound.  For 
the best results, point the speakers in toward the listeners (especially 
if the speakers are far apart) so their coverage areas overlap to prevent 
dead spots (areas not covered by the speakers' sound).  Position the 
speakers slightly above the level of the listeners heads (see "Connecting 
Speakers" in Faxback Doc. # 51681).

(EB 3/4/99)