13
Follow steps
or below to set
FM volume
to
proper level. Two people are needed to properly set the
volume level. It is difficult to hear your own voice and
make adjustments to it.
setting FM volume
5
1
1
With a sound level meter
- Take a level reading in the “A” setting in the center of the room
during normal classroom activity, and another reading of the teacher's amplified voice (with-
out the class activity). The level of the teacher's voice should be set between 10-15 decibels
above room noise level.
Without a sound level meter
- First, ask someone to help you set the volume to a com-
fortable listening level. As your listener, they should also be the person making adjustments to
the volume setting. The speaker should begin talking into the microphone at their normal
speaking level while the listener determines the appropriate volume setting. The recommended
volume setting is achieved when the sound from the loudspeakers and the speaker’s voice are
the same level. If the speaker can hear their own voice through the loudspeakers, the volume
setting is too high.
NOTE:
The average volume setting is between 4–5, but
may change depending on room acoustics and noise level.
2
1
2
4747 230R Multi-Freq User Guide 4/22/05 3:09 PM Page 19
