MPA-50 40-Watt PA Amplifier
(320-2002)                 Operation                  Faxback Doc. # 51512

Controls and Operation

 MICROPHONE 1 and 2 Inputs - Connect any standard dynamic microphone with
                             a 1/4-inch plug.

POWER Switch and Indicator - Press the bottom half of the switch to turn
                             on the amplifier. The indicator lights. Press
                             the top half of the switch to turn off the
                             amplifier.  The indicator goes off.

     MASTER VOLUME Control - Controls the overall loudness level of all
                             sources.  With the amplifier and the audio
                             input source turned on (and set to play, if
                             needed), set this control to its mid-range
                             setting (5).  Adjust this control again after
                             adjusting the source mixing controls.

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

    MIC 1 and MIC 2 Source - Adjusts the input level for each microphone
           Mixing Controls   to get the proper volume and balance.

   PHONO/AUX Source Mixing - Adjusts the input level of the PHONO or
                   Control   AUX/CD sound source for the best volume and
                             balance.

  150 Hz Equalizer Control - controls output for instruments in this very
                             low range (organ, contrabassoon, etc.)  Too
                             much bass makes music sound muddy and boomy,
                             while too little makes it sound hollow and
                             thin.  Rotate the knob clockwise to enhance
                             bass sounds or counter-clockwise to reduce
                             rumble, acoustic feedback, and other low
                             frequency disturbances.

   1 kHz Equalizer Control - controls the midrange frequencies (voice and
                             instruments).  Rotate the knob clockwise to
                             bring the vocalist "up front," or counter
                             clockwise to move the singer "back" into the
                             sound mix.

   6 kHz Equalizer Control - controls high frequencies, such as those
                             generated by cymbals, and can also act as a
                             high-frequency noise filter.  Rotate the knob
                             clockwise to increase high frequencies, or
                             counterclockwise if the sound becomes
                             overbearingly harsh and strident.

(EB 3/1/99)