Dodge CHALLENGER 2021 Owner's Manual page 163

Audio Setting
Speed Adjusted Volume
Surround Sound — If Equipped
Loudness — If Equipped
AUX Volume Offset
Auto Play — If Equipped
Radio Off With Door — If Equipped
Description
The Speed Adjusted Volume is adjusted by selecting from "Off", "1", "2",
and "3". This alters the automatic adjustment of the audio volume with
variation to vehicle speed. Volume increases automatically as speed
increases to compensate for normal road noise.
When Surround Sound is on, you can hear audio coming from every
direction as in a movie theatre or home theatre system.
When Loudness is on, the sound quality at lower volumes improves.
The AUX Volume Offset is adjusted by pressing + and – buttons. This
alters the AUX input audio volume. The level value, which spans between
plus or minus three, is displayed above the adjustment bar.
The Auto Play feature begins playing music as soon as a USB Media
device is connected to one of the vehicle's Media USB ports, when it is
turned on. Press "Off" to turn the setting off.
The Radio Off With Door feature, when activated, keeps the radio on until
the driver or passenger door is opened or when the Radio Off Delay
selected time has expired.
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