Operation - Adastra A200 User Manual

Operation

When all connections have been made as described above, turn down the MIC VOLUME and
MASTER VOLUME control and switch on the power.
If a microphone is connected, gradually increase the MIC VOLUME whilst speaking into the
microphone until the required level is reached through the speakers.
Note: Avoid pointing the microphone towards the speakers, which may result in feedback
(loud whistling or howling caused by the microphone 'hearing' its own output)
The A200 has an inbuilt media player section, which governs all background music and
playback options (independently of the microphone input). Full details of the media player
operation are shown overleaf.
The Media player output level is governed by the music VOLUME control (8).
The tonal character of the media player and line inputs is adjusted via the TREBLE and BASS
EQ controls (5, 6)
Turning the TREBLE control clockwise boosts the higher frequencies, whilst turning it
anticlockwise reduces the higher frequency content. Reduce the TREBLE level if there is
screeching feedback from the microphone or if playback is too thin or tinny sounding.
Increase the TREBLE level if the sound is muffled and not clear.
Turning the BASS control clockwise boosts the lower frequencies, whilst turning it
anticlockwise reduces the lower frequency content. Reduce the BASS level if there is low
howling feedback from the microphone or if playback is too boomy and distorted. Increase
the BASS level if the sound is too thin with not enough warmth or depth.
Be aware that a combination of Mic volume, Music volume, Treble and Bass all add up to drive
the amplifier and if all are turned up, this can result in overdrive (aggressive and growly or
fuzzy output) which can be damaging to connected speakers and the amplifier.
Turn the output levels down if this happens until the distorted sound becomes cleaner and
clearer.
Before powering the A200 off, ensure that the volume controls are turned down to avoid loud
noises or pops through the connected speakers.
953.425UK User Manual