1 Welcome
Commercial Audio Series Business Music System
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
Input Volume Controls: Three detented potentiometers with
knobs. Input 1: Microphone/line (switchable); Inputs 2 and
3: Line.
Tone Controls: Bass and Treble
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.
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
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
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.).
Figure 1.1 Front Panel Controls and Indicators
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