Parasound AVC-2500 Preset Button, Digital Button, Surround Button, Surround Mode Indicators

Preset Button

Pressing the Preset button once automatically selects the tuner, even if a different source was already selected. It temporarily converts the knob from controlling volume to become the Preset Selector for the stations that were stored into the 20 possible memory presets. Its blue LED will stay lit for five seconds during which time the rotary knob is available for selecting presets. If you want the knob to revert to volume control without waiting five seconds, press the Preset button again.

Digital Button

Pressing the Digital button once temporarily converts the knob from controlling volume to become the Digital Input Selector. Its blue LED will stay lit for five seconds during which time you can choose any of the eight digital inputs, the 5.1 channel analog input, or return to analog. If you want the knob to revert to volume control without waiting five seconds, press the Digital button again.

Surround Button

Pressing the Surround button once temporarily converts the knob from controlling volume to become the Surround Mode Selector. Its blue LED will stay lit for five seconds during which time you can choose any of the five ASP modes. If you want the knob to revert to volume control without waiting five seconds, press the Surround button again.

Surround Mode Indicators

These indicators let you know the type of digital bitstream the AVC-2500 has detected and how it is being decoded.

DTS indicator

The blue DTS indicator illuminates when the AVC-2500 has detected a DTS bitstream, regardless of which ASP mode you have selected.

Dolby Digital

The blue Dolby Digital indicator illuminates when the AVC-2500 has automatically detected a Dolby Digital bitstream, regardless of which ASP mode you have selected.

Pro Logic Indicator

The blue Pro Logic indicator illuminates when the AVC-2500 has automatically detected an analog, PCM, or 2/0 Dolby Digital signal. However, Pro Logic processing is only available in the Cinema ASP mode.

Overload Indicator

The red Overload indicator will illuminate when any of the internal analog-to-digital converters are being overloaded. This only occurs when an unusually high output analog source is selected. The AVC-2500 monitors the extent and duration of the signal overload to determine the optimum signal level applied to the A/D converters. If this indicator flashes, the AVC-2500 will attenuate the signal just until the internal analog-to-digital converters are no longer overdriven and the overload indicator stops flashing. This new level will remain while the source is playing so there are not audible volume fluctuations.You can also manually adjust the input level to the analog to digital converters in the setup menu.

23