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6.
Troubleshooting/FAQs
No audio output from extension speaker.
n
Check the input selector switch is set to the correct
input.
n
Check the input level is correct , ie the green input
LED is illuminated.
n
Check output level.
The noise cancellation does not appear to improve
the quality of the audio signal.
n
Check the noise cancellation is on, the green LED
will be illuminated.
n
Change the level of noise cancellation.
n
Check the green power on/off LED is illuminated.
Sometimes there is a short delay before the noise
cancellation is active.
n
This is due to the time the DSP takes to start
processing the signals. This gives the opportunity
to check that the DSP is not taking out any detail
from the signal.
No audio output when the power is switched off.
n
When the power is removed the line in connects to
line out, and audio in to audio out. If the input source
is connected to the line input, and the output to the
audio out, then no signal path will be present with
no power.
