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FUNCTION Button
AUDIO level LED
4.
Operation
Once installed and connected to the required audio source, apply power to both the audio
source and the speaker. When power is applied to the speaker, the indicators will step
through in sequence and the speaker will emit a low tone and the two high tones.
5.
Audio Level setting
An AUDIO LEVEL LED indicates the input audio level that is being received from your
audio source. Once the correct level has been set on your audio source, the volume
control may be used to adjust the volume.
To set the audio level, turn your source volume control down to zero. Then gently
increase the volume until the AUDIO LEVEL LED lights. The optimum input level is when
the LED is on continuously most of the time, but if this is not achievable the unit will still
function correctly as long as the LED is flashing green but not flashing rapidly. If the
AUDIO LEVEL indicator flashes rapidly, the audio input level is too high, and audio
distortion may occur.
6.
Noise Cancellation
The DSPKR STATUS indicator will
initially show Red to indicate that noise
cancelling is off. When the FUNCTION
button is pressed momentarily, the unit
will step through the noise cancelling
levels and the STATUS indicator will
show Orange. Every time the
FUNCTION button is pressed, the
speaker will emit a short tone, and the
unit will step up to the next filter level. A
double tone will be heard when the maximum level of noise cancelling is reached. A
further press at this stage will send the unit back to Noise Cancelling OFF mode. Use this
feature to select and store your desired filter level (
6.1
). Note: If the volume is too high it
may be difficult to hear the beep.
7 filter levels table
Noise
Cancelling
STATE
Indicator
Tone
Reduction
(dB)
White Noise
Reduction
(dB)
OFF Red None None
1 Orange 4
9
2 Orange
5 11
3 Orange
6 13
4 Orange
8 15
5 Orange
16 17
6 Orange
21 20
7 Orange
25 24
STATUS LED
