Front Panel Controls And Indicators - Crown 180MAx Pack Operation Manual

1 Welcome

1.2 Front Panel Controls and Indicators

A. Input Section
Top to bottom:
Input Signal Presence Indicator: Green LED, one for each
input channel, illuminates when input signal exceeds
–24 dBu (line) or –70 dBu (mic).
Input Volume Controls: Three detented potentiometers with
knobs. Input 1: Microphone/line (switchable); Inputs 2 and
3: Line.
Tone Controls: Bass and Treble non-detented recessed
potentiometers on each input channel. Bass ± 10 dB at 100
Hz, Treble ±10 dB at 10 kHz.
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B. XM Tuner Input Section
Top to bottom:
Signal Presence Indicator (same as in Input section)
Input Volume Control (XM tuner volume)
Bass and Treble Controls (same as in Input section)
C. XM Tuner Display
LCD screen displays XM channel data (channel number,
channel name, artist name, song title), 16 station presets and
signal strength.
D. XM Tuner Scroll Knob
Lets you scroll through channels and select them.
Figure 1.1 Front Panel Controls and Indicators
Commercial Audio Series Business Music System
E. Master Output Section
Top to bottom:
Output Signal Presence Indicator: Green LED illuminates
when output signal level exceeds 100 mV (45 dB below full
power) from the 4-ohm tap.
Clip Indicator: Red LED on output illuminates at threshold of
audible distortion.
Output Volume Control: Detented potentiometer with knob.
F. AC Power Section
Top to bottom:
Power Indicator: Blue LED indicates power on.
Power Switch: Pushbutton on-off switch.
G. XM Tuner Menu Controls
Left to right:
Menu Button: Selects Preset or Category mode (see Section
3.4).
Category Buttons: Scrolls through Categories (rock, classi-
cal, news, country, etc.).
Operation Manual