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Accusound AMA-1 ハンドブック
Amplifier use
5.
Before switching on your amplifier, ensure all volume controls are at minimum
and connect all inputs and outputs.
Your instrument or microphone should be connected to input 1 or 2, each have
the same facilities so you may chose either and achieve the full use of the
amplifier.
Input 1 & 2 connectors:
These XLR/Jack input connectors will accept either 3pin male XLR connectors
or 1/4" (6.35mm) jack plugs. The input sensitivity is the same whichever
connector is used but may be switched using the 0/-20dB button. Phantom
power may be applied to the XLR connector, no effect will be noticed if the
phantom power button is on when you use the 1/4" jack connection.
Gain:
This control changes the input level taken from your instrument/microphone. To
get the most out of your amplifier it is best to use this control at as high a level
as possible whilst still maintaining the sound you want.
Frequency/width/level:
These controls adjust the parametric tone control on each channel. This control
allows you to make a tone control that operates on any frequency you desire.
First select the frequency by adjusting the FREQUENCY knob, counter-
clockwise for low frequency and clock-wise for high frequency.
Next adjust the boost or cut of this frequency using the LEVEL knob, counter-
clockwise for cut and clock-wise for boost.
Finally adjust the width of the control or the number of frequencies around the
selected frequency by adjusting the WIDTH knob, counter-clockwise for
narrower or fewer frequencies and clock-wise for wider or more frequencies.
This process may need to be repeated to optimise the ef fect you are trying to
achieve. This is particularly useful if the room in which you are playing or the
instrument you have has a particularly strong resonance at any frequency .
If you do not want to use this facility simply adjust the LEVEL knob to the
central position, a click stop is in the centre so it is easily found, and the filter
will have no effect.
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