Subwoofer Setting; Loudness And Sound Mode Setting; Internal Amplifier On/Off; Startup Volume Setting - Boss Audio Systems BE9ACP User Manual

System Settings
Audio Settings

Subwoofer Setting

[Subwoofer]: Enable or disable subwoofer
output.
[Subwoofer Filter]: Adjust the cutoff frequency
for the subwoofer. Only the frequencies below
the one you set will be received to reproduce
sound.
[Subwoofer Level]: Adjust volume output for
subwoofer.

Loudness and Sound Mode Setting

[Loudness]: Enable to boost output of low and
high frequencies.
[EQ]: Select a predefined sound mode or
customize equalizer settings. (P.13)

Internal Amplifier On/Off

[Internal Amp]: When using the pre-amp audio
outputs, turn off the internal amplifier to reduce
the possibility of noise entering the signal chain.

Startup Volume Setting

[Main] (under [Default Volume]): Set a desired
volume for main audio (radio and media play)
when the unit starts up with main audio.
1.
Adjust the slider to set a new volume value.
2.
Startup volume will be the set volume if the
set volume is less than the last shutdown
volume (as main audio).
Startup volume will be the last shutdown
volume if the set volume is greater than the
last shutdown volume (as main audio).
Initial Volume Setting for Other
Sources
You can set desired initial volumes for the
following sources (under [Default Volume]).
• [BT Ring]: Bluetooth ringtone volume.
• [BT Talking]: Bluetooth call volume.
• [Navi]: Navigation volume.
• [Voice]: Voice assistant volume.
1.
Adjust the respective slider to set a new
volume value.
2.
Initial volume will be the set volume if the set
volume is less than the last used volume.
Initial volume will be the last used volume if
the set volume is greater than the last used
volume.

Customization of a Source Volume

You can increase or decrease one of the
following source volumes, without affecting
volume of other sources (under [Source Level]).
• [Radio]: Adjust radio volume alone.
• [USB]: Adjust USB playback volume alone.
• [BT Audio]: Adjust Bluetooth streaming
volume alone.
• [AV Input]: Adjust audio input volume alone.
• [Apple CarPlay]: Adjust CarPlay volume alone.
• [Android Auto]: Adjust Android Auto volume
alone.
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