Apple AppleVision monitors (OS 7.1) - Manual (Page 24)

Adjusting AppleVision headphones volume
To adjust the volume of headphones attached to the AppleVision monitor,
follow these steps:
1 Open the Monitors & Sound control panel, then click the Monitor Sound button.
2 Adjust the Headphone Volume slider.
3 To leave the monitor’s speakers on when you connect something, such as a subwoofer,
to the headphone port click the Preferences button; then click Mute checkbox to remove
the X.
Saving energy while the computer sleeps
Some models of the AppleVision monitor can turn off their speakers and
amplifier when the computer goes to sleep. This stops sound output during
sleep and saves energy, but also prevents you from hearing the startup sound
when you turn on or restart your computer.
To turn on this option, click the Preferences button in the Monitor Sound
window, then select the “Turn speakers off in Energy Saver mode” checkbox.
If your AppleVision monitor does not support this feature, this checkbox will
not appear in the Sound Preferences dialog box.
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