Fleetwood Group Inc ECM9XX 用户手册
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IMPORTANT: Always adjust the volume on the lesson for a “LESSON LEVEL” that
occasionally fluctuates into the yellow, but rarely into the upper red range. Too much meter
deflection into the red will cause the students to turn their volume down in their headsets,
which could cause the headsets to turn off.
occasionally fluctuates into the yellow, but rarely into the upper red range. Too much meter
deflection into the red will cause the students to turn their volume down in their headsets,
which could cause the headsets to turn off.
2.1.5. Classroom Speaker System (Figure 7)
NOTE: Please refer to Figure 7 when reading the next section.
To use the Classroom Speaker System, use the following procedure:
1. Set the instructor’s “LESSON SELECT” button to the lesson source number you want to hear.
2. Turn the volume control clockwise to turn the amplifier on and adjust for the desired listening
level.
IMPORTANT: Always adjust the volume on the external lesson for a “LESSON LEVEL” that
occasionally fluctuates into the yellow, but rarely into the upper red range.
Figure 7
3. The instructor can use the classroom speaker system as a PA system by pressing the console
button “MIC WITH LESSON” or “ALL CALL” and using the instructor’s
headset/microphone.
headset/microphone.
NOTE: Setting the speaker amplifier volume control too high may cause feedback (squeal).
Turning the volume control down can eliminate this.