2007 Subaru Outback Owner's Manual - Page 208

Audio 5-25 AUX unit operation & AUX jack & AUX inputs selection button low, the sound becomes bad when you turn up the volume of the vehicle audio system. In this case, adjust the sound volume of the portable audio player. . In some cases, noise occurs because of a bad connection between the portable player of the vehicle audio system or for the player. By connecting a commercial audio product to the vehicle, such as portable audio player, you can hear its sound via the vehicle's speaker. Connect the portable audio player and push the "AUX" button. For the audio input jack, a stereo mini pin plug (3.5ø) can be connected. For detailed information, see the owner's manual of the portable audio player. Press the "AUX" button when the auxiliary audio input is off to turn on the auxiliary audio input. NOTE . The output sound of the portable audio player is not loud, and the sound via the vehicle's speakers that are connected to the vehicle audio set is very small. If you turn up the volume of the audio set, the volume becomes louder. However, when you change the player to the other portable audio player, the sound may become a lot louder. Turn down the volume when you change between them. . In some cases, when the sound volume of the portable audio player is