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1. Low Level RCA Inputs: These are your dierential balanced
inputs that are used to connect audio signal from your headunit /
source unit to your amplier. Your AC Series Amplier is capable
to receiving either High Level Speaker Outputs or Low-Level RCA
cables. If you are using High Level Speaker outputs, you may need
a high to low level adapter such as the Aunex AP-SL2 adapter.
2. Input Mode Selector: This switch allows you to select the
number of RCA inputs used to send audio signal to your
amplier. In 2 Channel Mode, only 1 set of RCA inputs is
needed to drive all 4 output channels. (You will need to set the
Input Mode switch to the 2Ch. position.) In 4 Channel Mode, all
4 RCA inputs will be connected and the Input Mode switch will
need to be set to the 4Ch. position.
3. Clipping Led Indicators: These LED’s will light up when the
amplier output signal is being clipped. When the LED’s starts
to glow, your amplier output is between 1-2% THD (Total
Harmonic Distortion). When the clipping indicators are fully lit,
your amplier output is between 6-7% THD (Total Harmonic
Distortion). The ideal gain setting is where the clip indicators are
not lit allowing the amplier to send undistorted clean output.
Setting the ampliers gains improperly where the clip indicators
are always lit will over-work the amplier and may cause
excessive heat building and possibly product.
4. Input Gain: Use these Input Gain Potentiometers to match the
output voltage of your headunit / source unit to the input circuit
of your amplier. These Input Gains are not a volume knob.
A simple method of setting your Input Gains is to turn your
head adunit / source unit up to approximately ¾ volume. Then
slowly adjust your Input Gains on your ampliers clockwise until
you can hear distortion from your speakers or subwoofers. Then
turn the gains down (counter clockwise) till the distortion is no
longer heard and your clipping indicators are not lit.
Side Panel Layout Continued
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