Sony SRS-XV900 Help Manual page 62

Touch AUDIO IN on the speaker.
3
Turn on and start playback on the connected device.
4
Adjust the volume to a moderate level on the connected device.
5
If the volume is adjusted by operations on the connected portable audio device, the
speaker will not flash.
Touch –/+ (volume) on the speaker to adjust the volume.
6
When you touch –/+ (volume) on the speaker to adjust the volume, the
Hint
When you cannot hear the sound, raise the volume on the connected device.
Note
While a portable audio device is connected to the AUDIO IN jack and music playback is in progress, operations on the speaker,
for example, to pause, to skip to the beginning of the next track, and to skip to the beginning of the current track are disabled.
(power) indicator flashes once or 3 times.
62
(power) indicator on the