Crown FM600 - Audio Monitor Connections; Pre-Emphasis Selection

2-14 FM600 User’s Manual
Composite IN
BNC Connector
Audio Monitor Jacks
Illustration 2–16 Composite In and Audio Monitor Connections
2.9 Audio Monitor Connections
Processed, de-emphasized samples of the left and right audio inputs to the stereo generator
are available at the Monitor jacks on the rear panel. The signals are suitable for feeding a stu-
dio monitor and for doing audio testing. De-emphasis is normally set for 75 µsec; set to 50
µsec by moving jumpers, HD201 and HD202, on the Audio Processor/Stereo Generator board.
2.10 Pre-emphasis Selection
Select the pre-emphasis curve (75 µsec, 50 µsec, 25 µsec, or Flat) by jumpering the appropri-
ate pins of header HD1 on the Audio Processor/Stereo Generator board. If you change the
pre-emphasis, change the de-emphasis jumpers HD201 and HD202 on the Audio Processor/
Stereo Generator board to match.