9
About 5 – 10 cm
(2" – 4")
ON/O
FF
9.3. Microphone-to-Mouth Distance
To obtain better sound quality, it is advisable that the
microphone be kept 5 – 10 cm (2" – 4") from the mouth.
For hands-free use, adjust the neck strap length so as to
position the microphone within this distance range.
Note
Do not speak loudly with the microphone close to the mouth
(within 5 cm or 2").
The voice will sound muddy and hard to hear.
A
B
H
L
IR-310M (rear)
Microphone sensitivity
selector switch
[Inside of the
battery cover]
2
H
L
the Q-EM-77 Single Ear Microphone and "L" position for the YP-M301 or WH-4000H Headset
Microphone.
If reproduced voices are distorted depending on the environment of use, set the sensitivity to "L"
position.
Notes
• Be sure to
switch the unit’s power OFF
before setting.
• Avoid bringing the microphone too close to your mouth or speaking too loud into the
microphone. Otherwise, reproduced voices may become muddy or cracking.
• The sensitivity is factory-set to "H" position.
Step 1. Check that the power is switched OFF,
then remove the battery cover. (Refer to
Step 2. Set the microphone sensitivity selector
switch to the desired position.
Step 3. Replace the battery case and tighten it
firmly.
9.4. When Using the Clip
In the case of hands-free use, to keep the unit from moving, fix it to the front of your clothes with
the clip.
When clipping the microphone to your clothes front, use one of the clip tabs and orient the
microphone vertically as shown below.
Clip
IR-310M (rear)
Clip
Clothes
