MPA685 Owner’s Manual
3/2012
3
CONTENTS
Introduction………..………………………………….……….…………………………….
Description…………………………………………………………………………………..
Block Diagram………………………………………………….………………………...…
Safety Instructions…….……………………………………….…………..…………..….
Instructions for Use……………………………………………………….…………..…..
1. AC Power………………………………………………………………………..
2. Turning Power On and Off……………………………………………………
3. Audio Connections……………………………………………………….……
4. Using the Audio Input / Microphone Impedance Selector……….……..
5. Adjusting the Audio Input Level Settings…………………………………
6. Overload LED…………………………………………………………………..
7. +48V Switch…………………………………………………………………….
8. Phase Invert……………………………………………………………………
9. High Pass Filter………………………………………………………………..
10. Adjusting the Output Level………………………………………………….
Audio Specifications………………………………………….…………….……………
AC Specifications..…………………………………………….…………….……………
Environmental Specifications……………………………………………….…….……
Care and Maintenance……………………………………………………………………
1. Fuse………………………………………………………………………………
2. Power “On” Bulb………………………………………………………………
3. Cleaning…………………………………………………………………………
Troubleshooting………………………………………………………………………..….
Contact Information …………………………………………………………………...…
Warranty Information………………………………………………………………….…
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