Wireless Microphones

A wireless lavalier microphone is installed in most G.U. spaces for voice lift needs.

Each wireless microphone is mapped to a specific location and it will only operate in the room for which it has been configured.

The audio output from this microphone feeds the local speakers, and it is also routed back into the classroom Rack-PC to support audio capture, and/or web conferencing (where applicable).

Lavalier Microphone Placement:

Microphone placement/location is important for effective voice lift performance. Please ensure that a clear line-of-sight to the microphone is maintained without physical obstruction. It is recommended that the microphone capsule is:

Positioned between 5 ~ 8 inches, below one’s chin;
Firmly fastened, pointing directly up towards the presenter’s mouth;

Wireless Microphone Systems

Lectrosonics LMa Microphone

Power up the microphone by using the on/off switch located on the top of the beltpack. It will take a few seconds before the microphone becomes active during which the beltpack’s LED indicators will flash several times.

If the battery indicator is amber, red, or not illuminated after turning the microphone on, replace the battery.

To replace the battery:

Invert, and observe the bottom of the beltpack case: this cover is the battery door
At the narrow edge firmly press the up on tensioned battery door to push it slightly up and away from the case whilst rotating it outward – to the side
The battery compartment should now be exposed. The single, 9-volt battery should easily slide out from this compartment.
On the inside of the battery compartment locate the diagram that shows the correct battery polarity.
Insert the new, 9-volt battery to match the polarity as indicated.
To close the battery door, rotate and re-seat it by sliding the battery door toward the case.

Note: Do not force the battery door closed; it is designed to resist full, and complete closure to indicate if a battery has not been inserted correctly

LMa Micophone transmitter and 9v Battery

Opening the battery compartment

Battery compartment perspective

Lectrosonics LMb Microphone

If the battery indicator is amber, red, or not illuminated after turning the microphone on replace the battery.

To replace the battery:

Locate the small, battery door on the bottom of the beltpack
Firmly press in on this door with your thumb whilst sliding the battery door outward, and away from the case.
The door should then release and open downward to expose the battery compartment.
Existing batteries should easily slide out from this compartment.
On the inside of the battery door and/or inside the battery compartment – locate the diagram showing the correct battery polarity.
Insert the battery matching the polarity as indicated.
Carefully close the battery door and re-seat it by sliding it inward toward the case.

Note: Do not force the battery door closed; it is designed to resist full, and complete closure to indicate if a battery has not been inserted correctly

LMb Micophone transmitter

Battery indicator on the microphone transmitter

Open battery door with two +AA betteries

Shure Hand-held Microphone

Power up the Microphone by pressing and Holding the power button for 2 seconds

Power down the Microphone by pressing and Holding the power button for 5 seconds.

Shure SM58 Wireless microphone

To replace the battery:

Locate the battery compartment in the lower half on the Microphone.
Unscrew the bottom half of the Microphone to release the battery compartment cover.
Slide down the battery compartment cover to reveal the batteries.
Gently pull up on the blue battery eject tab to release the batteries from the Microphone.
Remove the old batteries and close the battery eject tab
Insert two new 'AA' batteries to match the polarity as indicated.
Slide up and reattach the battery compartment cover over the batteries

Batteries removed with ejection tab