Instructions
Change Voice Settings
Press the "Guide" button on your controller.
Navigate to the "Settings" tab.
Select "Preferences" and press the "A" button.
Select "Voice" and then press the "A" button. This loads a list of voice-related options.
Select "Voice Volume" and move the slider to "10." This turns the volume to the max level. You can reduce this number if you find this too loud.
Select "Play through Headset" in the "Voice Output" section and then press the "A" button. This directs all voice chat audio through the headset.
Change Privacy Settings
Select "My Xbox" on the dashboard.
Select your avatar and press the "A" button.
Select "Profile" and then press the "A" button.
Select "Change Settings" on the "Online Safety" tab and press the "A" button.
Select "Custom" and press the "A" button.
Select "Customize" and then press "A."
Select "Voice and Text" and press "A."
Select "Everyone" or "Friends only" and press the "A" button.
Reset Wireless Headset
Hold down the headset's "Power" button for three seconds to turn off the wireless headset and then turn off the Xbox 360.
Turn on the Xbox 360 and log in to your profile.
Press the headset's power button once to turn it on.
Press the "Connect" button on the front of the Xbox 360.
Hold down the "Connect" button on the headset for three seconds to reconnect it to the Xbox.