III THE ValComm 900 MICROPHONE
A.
ARMORED GOOSENECK MICROPHONE
Earmark designs and provides only "noise cancelling" Microphones. With a noise
cancelling design, the front and back of the microphone respond differently to
outside noise energy. It's all done to give you an advantage when you have to work
and talk in high noise. The microphone's front side, the side closest to your mouth,
hears your voice up to 16 times better than the microphone's back side. That's why
it's so important to talk into the front side. At Earmark, we mark our microphones so
the side you talk into the side marked "Talk". You're always ok if you keep the Talk
side closest to you.
5
Noise cancelling works best when you
"close talk"
the microphone. To
close talk
means to keep the microphone's front side very close to your lips, within 1/4 inch.
When you keep the microphone's front side close to your lips, you'll sound great,
and your voice will seem much louder than the outside noise around you. The extra
effort required to use a noise cancelling Microphone the right way really pays off; it
dramatically improves sound quality.
Maintaining your microphone requires very little effort. Preventative maintenance is
the key to long life. First and foremost, make certain the end is covered by a
windscreen. The windscreens keeps the metallic micro-mesh guards from getting
dirty as well as reducing the effects of air noise across the microphone. When the
micro-mesh guards get blocked with dust and moisture, they block the sound energy
from getting through and make it hard to talk. Guard blockage, caused by a missing
windscreen, is the most common reason for microphone failure.
IV CONTROLS AND OPERATION
A.
ON/OFF VOLUME SWITCH
This switch turns the Headset ON and provides a continuous volume control, from
min to max. Located behind the earcup, the switch is easy to find and large enough
to control with a gloved hand.
4
Volume control location
