Operation - Williams Sound PLA-240 User Manual

Microphones
If a direct connection is not possible then a microphone can be used to pick up the sound
from a TV or other loudspeaker. Microphones can also be used for someone to speak
directly into the loop system so they can speak directly to the hearing aid user when they
listen to TV. A microphone can be used at the same time as the line inputs to monitor other
sounds such as a doorbell or telephone ringer.
A microphone can also be used in either a classroom or public speaking situations.
One or two microphones can be used at the same time using the microphone jacks.
A priority function also exists when using a microphone in jack "B" to override sounds
from any other input to the loop amplifier.
Connect Power to the Amplifier
Plug the power supply plug into the jack on the rear of the amplifier. Plug the line cord
into the jack on the power supply and plug the other end into the wall jack. Switch on the
unit by pushing the power button on the front right side of the unit.

Operation

When connecting power for the first time to your amplifier the power button will illuminate
blue and the amplifier will be "On". This is normal operation and is intended for situations
where remote switching of AC power happens and the unit needs to power-up in the
"On" state.
Pressing the power button on the amplifier will change the color to red and the amplifier will
be in standby mode which (1) uses low power and (2) no signal will be passed to the loop.
Press the power button again and it will light up blue. The system is now ready for use.
1. Set the television or other audio equipment to normal listening level for the other listeners in
the room.
2. Select the sound source required from either the front buttons or the remote control.
3. Set the volume control to minimum.
4. Set the tone control to normal position (12 o'clock).
5. Switch your hearing aid to the "T" or loop function.
6. Adjust the volume to suit your listening With the remote control, or the front knob.
Pressing the power button will turn the amplifier off and the light will glow red. The next
time the power is turned on the volume, tone and source selections from the previous
session will be restored.
PLA 240 Small Room Loop Amplifier