Firecom 3000C Installation & Operation Manual page 21

MICROPHONE PLACEMENT
The microphones used on Firecom headsets are noise-canceling electret microphones. The
placement of the microphone is VERY important. For proper operation, the microphone
should be positioned in front of the mouth and no more than 1/8" away from the lips
(Figure 21).
Placement of the microphone is CRITICAL. If the microphone is positioned incorrectly,
you will experience drastic reduction in volume and clarity of the intercom and radio
communication.
LEFT & RIGHT DRESS
The Firecom headsets may be adjusted so the mic is on the right side (right dress) or left side
(left dress).
• Over-The-Head (FH) style headsets: Rotate the Mic Boom ONLY in an upward
direction (Figure 19).
ALWAYS rotate the Mic boom upwards as shown to prevent damage to the
Mic Boom and the Mic Cable.
• Under-The-Helmet (UH) style headsets: Rotate the Mic Boom and the rear
Headband ONLY in an upward direction (Figure 20).
ALWAYS rotate the Mic Boom and the rear Headband upwards as shown to
prevent damage to the Mic Boom, the Mic Cable and the Headband Cable.
HEADSET VOLUME CONTROL
Located on the ear dome of each Firecom Headset is a volume control for adjusting the
volume of headset speakers. This allows each user to adjust the volume to the preferred level.
Turning the Volume Control clockwise increases the volume, turning the control counter-
clockwise decreases the volume.
Adjustable Headstrap
PTT
Volume Control
Headband
I N T E R C O M O P E R A T I O N
FIGURE 20:
UH Style Headset
Adjustable Headstrap
Headband
IMPORTANT
IMPORTANT
IMPORTANT
FIGURE 21:
Microphone Placement
No More Than 1/8" From Lips
19.