Press the f UP button to select the MUTE mode.
Press and hold the SETUP button for at least 2 seconds.

Switching the Phase of the Subwoofer Output

You can switch the phase of the subwoofer output to NORMAL 0˚ or REVERSE 180˚.

To select the desired phase.

1 Press and hold the SETUP button for at least 2 seconds.

2 Press the fUP button to select “Switching the phase of the SUB-W (SUB-W NORMAL or REVERSE) mode.”

3 Press the TUNE button to select NORMAL (0˚) or REVERSE (180˚).

NOTE

The initial setting at the factory is SUB-W NORMAL.

4 Press the SETUP button to set the selected mode.

Setting the Subwoofer Output

You can set the subwoofer output to stereo or monaural.

Make sure to set the correct output for your subwoofer type.

1

2 Press the fUP button to select “Switching the SUB-W monaural/Stereo (SUB-W STEREO or MONO) mode.”

3 Press the TUNE button to select SUB-W STEREO or MONO.

SUB-W STEREO:

Subwoofer stereo (L/R) output

SUB-W MONO:

Subwoofer monaural output.

NOTE

The initial setting at the factory is SUB-W STEREO.

4 Press the SETUP button to set the selected mode.

Sound (Beep) Guide Function

This function will give audible feedback with varying tones depending upon the button pressed.

1 Press and hold the SETUP button for at least 2 seconds.

2 Press the f UP button repeatedly to select “BEEP.”

3 Press the TUNE button to toggle the mode between BEEP ON and BEEP OFF.

NOTE

The initial setting at the factory is BEEP ON.

4 Press the SETUP button to set the selected mode.

Turning Mute Mode On/Off

If a device having the interrupt feature is connected, audio will be automatically muted whenever the interrupt signal is received from the device. This function can be turned ON or OFF from the head unit by following procedure below.

1 Press and hold the SETUP button for at least 2 seconds.

2

3 Press the TUNE button to turn on or off the MUTE mode.

Each press toggles between the MUTE ON and OFF modes.

NOTE

The initial setting at the factory is “MUTE ON.”

4 Press the SETUP button again to return to normal operation.

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Alpine CDA-7878R Switching the Phase of the Subwoofer Output, Setting the Subwoofer Output, Sound Beep Guide Function