MPA-101 100-Watt  (320-2039)          USES             Faxback Doc. # 14628
PA Amplifier

USING YOUR AMPLIFIER

Follow these steps to use your amplifier.

1.  Press in POWER.

2.  Start the input sound sources.

3.  Set MASTER VOLUME to approximately the mid position.

4.  One at a time, adjust the MIC 1, MIC 2, MIC 3, MIC4/PHONO, and CD/AUX
    controls to the desired volume and balance.

    Note:  If you hear feedback after you adjust these controls, turn 
           FEEDBACK FILTER clockwise until the noise disappears.

5.  After you get the desired balance, adjust MASTER VOLUME to the desired
    volume level.

MONITORING THE SOUND SOURCES

To monitor the sound sources, insert the 1/4-inch plug of either mono or
stereo headphone (not supplied) into the amplifier's MONITOR jack.  Using
headphones lets you easily check and adjust the sound sources' balance.

Note:  Your local Radio Shack store carries a wide selection of head
       phones.

Listening Safely

Do not listen at extremely high volume levels.  Extended, high-volume
listening can lead to permanent hearing loss.  Follow these guidelines to 
protect your hearing, especially when you use headphones.

    Always start by setting the volume to the lowest level possible before 
    you begin listening.

    Put the headphones on, then gradually increase the volume as necessary.

    Once you set the volume, do not increase it.  Over a period of time,
    your ears adapt to the volume level, so a volume level that does not
    cause discomfort might still damage your hearing.

USING AN EQUALIZER

If you connect an equalizer, set the amplifier's BYPASS/EQ switch to EQ

Note:  If the equalizer has a bypass switch, be sure not to use it.
       Otherwise, the equalizer has no effect on your system's sound.

USING THE FEEDBACK FILTER

The FEEDBACK FILTER control lets you reduce or eliminate the squeal and
other noise caused by feedback.

After you adjust the MASTER VOLUME and MIC 1, MIC 2, MIC 3, MIC 4/PHONO,
and CD/AUX controls, test the amplifier.  If you hear any feedback, turn
the FEEDBACK FILTER clockwise until you reduce or eliminate the feedback.

The FEEDBACK FILTER control decreases feedback frequencies by up to 12 dB.
If it does not eliminate the feedback, a frequency equalizer can help
decrease the feedback frequencies even more.


(SP/all-04/20/95)