When you are listening to any audio source on your computer, there are usually three separate volume settings to consider: one from your computer, one from the application and the volume control on your Bose® system. For best sound performance, we recommend presetting your computer and application to 2/3 of the maximum volume or higher (see below). Then, use the volume control on your Bose system as the master control and adjust the volume accordingly.
The way in which you adjust the volume depends on the type of computer you are using, and on your operating system.
Follow the instructions below to adjust your computer operating system volume:
To adjust the volume of a computer using the Mac OS X operating system, follow these steps:
From the dock, select "System Preferences"
Click on the "Sound" icon
Click on the "Output" tab and make sure it is set to line out
Adjust the volume so that it is set to 2/3 of the maximum volume or higher

Nothing should be muted and the balance control must be centered for best performance.
To adjust the volume of a computer using the Windows 8 operating system, follow these steps:
On the keyboard, press the Windows key
plus C or swipe in from the right on a touchscreen to show the charm bar
In the charm bar, select "Settings"

In the Settings screen, select the volume icon

Use the volume slider to adjust the volume

To adjust the volume of a computer using the Windows 7 or Windows Vista operating systems, follow these steps:
Click the Start button on the lower-left corner of the computer screen

Click on the Control Panel button

In the Control Panel, click "Hardware and Sound"

Beneath the "Sound" icon, click "Adjust system volume" to open the volume mixer

Adjust the volume so that it is set to 2/3 of the maximum volume or higher

To adjust the volume of a computer using the Windows XP operating system, follow these steps:
Click the start button on the lower-left corner of the screen

Click on the Control Panel button

Select the "Sounds and Audio Devices" icon

Click the "Audio" tab and then click the "Volume" button in the "Sound playback" section highlighted here in red

Adjust all volumes to 2/3 of the maximum volume or higher

Nothing should be muted, and the balance control must be centered for best performance.
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