Australian Monitor AMIS31EQ - Manual (Page 6)

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4. Range Switch.
This switch will change the range of the filter sliders from +/-6db to +/-12dB
maximum cut or boost. This switch affects all channel sliders.
5. +/-6dB LED.
This LED will illuminate green when the range switch is set to 6dB.
6. +/-12dB LED.
This LED will illuminate yellow when the range switch is set to 12dB.
7. Bypass Switch.
This switch routs the channels input signal directly to the outputs,
bypassing all EQ circuitry. This switch is used to compare EQ’d signal with
unequalized material.
8. Bypass LED.
This red LED indicates that the bypass switch is activated for this channel.
9. Clip LED.
This red LED indicates if any section of the equalizer is within 5dB of
clipping. Occasional blinking of this LED is acceptable but a steadier
illumination indicates either the EQ’s level controls should be reduced or
gain from the preceding audio component should be reduced to avoid
distortion.
10. Low Cut Filter.
This control determines the roll off frequency of the AMIS31EQ’s High Pass
Filter (HPF). The roll off frequency can be adjusted from 10Hz to 250Hz. The
HPF can be used to eliminate hum or to prevent low frequency
resonance.
11. High Cut Filter.
This control determines the roll off frequency of the AMIS31EQ’s Low Pass
Filter (LPF). The roll off frequency can be adjusted from 3kHz to 40kHz. The
LPF can be used to eliminate high frequency noise from the audio system.
12. Level Control.
This level control can either cut or boost the output level for each
channel. The centre position will give unity gain.