iLs has two short tests to make checking headphone function quick and simple. The first is called the AC Test, which is used to check Air Conduction functionality.

On the iPod, select Playlists > Headphone Test > AC Test. There are two tracks, each of which has music with output to one ear only, enabling you to check the function of each side of the headphones independently. These are called:

• Left Ear Test
• Right Ear Test

With the iLs amplifier on, set the Bone Conduction volume at 0 and the Air Conduction volume to a comfortable level. Music should be heard in only the appropriate ear.

The second is called the BC Test, which is used to check Bone Conduction functionality. On the iPod, select Playlists > Headphone Test > BC Test. This track is made up of music samples rich in low frequencies. With the amplifier on, and the Air Conduction volume as low as possible, turn the Bone Conduction volume up to 1. Placing the Bone Conductor next to the ear, the sound should be audible. Check cable connections if there is a problem. For further assistance, contact our Service Department at 303-399-4183.