Sympton
Problem Isolation Steps
Resolution
Check
ISR sensor placement.
Evaluate the ISR sensor location in the room and
adjust as needed. It should be located near the
center of the room on the ceiling, or centered
along a long wall. Avoid placing it near obstruc-
tions such as beams, ceiling mounted equipment,
suspended lighting, etc.
Check
that the ISR sensor is located
away from possible sources of IR
interference.
Direct sunlight and Plasma monitors can adversely
affect performance.
Feedback
Verify
that volume on amplifier is not
set too high.
Reduce volume as needed until feedback issue is
resolved. Remember the teacher should barely be
able to hear his/her own voice at optimum volume
levels.
Check
that the microphone is being
worn properly.
The top of the microphone should be worn at the
level of the collar bone. Adjust the lanyard accord-
ingly.
Check
EQ settings on amplifier (if avail-
able)
If feedback persists at proper volume levels, adjust
any EQ setting in the 1K - 4K frequency range
down until feedback ceases.
Verify
proper speaker installation as per
Lightspeed installation guide.
If needed, relocate the speaker to eliminate the
feedback. Wall speakers should be at least 7 feet
high and ceiling speakers should not be used in
rooms with ceilings lower than 9 feet.
Verify
that the original microphone
works in another room.
If the problem persists in the other room, the mi-
crophone is the likely cause of the problem.
Low volume
Check
that the volume level on the
805iX preamp or amplifier is not
set too low.
Set the volume indicator at the 8 to 9 o’clock posi-
tion and then adjust as needed for normal opera-
tion.
Check
that microphone is being worn
properly.
The microphone should be worn at the level of the
collarbone.
Test
a known good microphone
on the same channel with the
system.
If the volume level remains the same as the
original microphone, the most likely cause of the
problem is the amplifier or speakers.
Check
volume level adjustment on back
of wireless microphone.
If using a microphone with volume control, volume
level may need to be increased.
Drop-out /
intermittent
operation
Check
if two microphones are being
used that they are on different
channels.
If needed, change one microphone to the oppo-
site channel.
Check
that there is no obstruction
between the ISR sensor and the
microphone.
Make sure the microphone is not blocked by
clothing or turned to face the user.
Check
ISR sensor placement.
Evaluate the ISR sensor location in the room and
adjust as needed. It should be located near the
center of the room on the ceiling, or centered
along a long wall. Avoid placing it near obstruc-
tions such as beams, ceiling mounted equipment,
suspended lighting, etc.
