Extron Electronics MPA 152 Plus User Guide - Manual (Page 16)

Setup and
Operation
This section discusses:
• Front Panel Features and Operation
• Remote Control Options
• Defeating the Auto Power-down Timer
• Troubleshooting
Front Panel Features and Operation
This section describes how configure the MPA 152 Plus, using the front panel controls and
how to set up the remote control options.
BASS LEVEL TREBLE
MINI POWER AMPLIFIER
MPA 152 Plus
STEREO
DUAL
MONO
1
2 3
Figure 8. MPA 152 Plus Front Panel
a Power LED — The LED lights green when the MPA 152 Plus unit is receiving power
and active. It lights amber when the unit is powered down (after 25 minutes of inactivity).
b
Stereo or Dual Mono toggle switch — Allows the user to choose between stereo
output for stereo applications (default) or dual mono output for mono applications.
c
Level, Bass, and Treble potentiometers — Three front panel potentiometers are
used to optimize input level, bass, and treble settings.
Setting Input Level
Adjust the MPA 152 Plus input level as follows:
1. Unplug the Remote plug from the unit.
2. Set the volume of the audio source to its minimum level.
3. Turn the Level potentiometer fully counterclockwise to its minimum setting.
4. Set the volume of the audio source to its maximum level. No sound should come out.
5. Slowly increase the MPA 152 Plus level by rotating the Level potentiometer clockwise
until sound distortion starts. Lower the level slightly until the distortion disappears. At
this setting, whatever the volume setting of the audio source, no clipping will occur.
MPA 152 Plus • Setup and Operation 10