Inspection For Each Cause

1. Make sure the mounting screws are properly tightened before replacing the speaker.
2. Reinstall the speaker and check that the symptom is resolved.
3. If the symptom does not disappear, replace the speaker with a new one.

1. Check that the speaker connector is properly connected and reinstall the connector if necessary.
2. If noises occur in the radio mode, turn to the media player mode.
3. If noises occur in both modes, replace the speaker with a new one.

Information 

If noises occur only in the radio mode, the poor radio reception is the cause so do not replace the speaker.

Front Door speaker  : 2.0 Ω

Rear Door speaker  : 4.0 Ω

Center speaker  : 2.0 ± 0.3 Ω

Tweeter speaker  : 4.0 ± 0.6 Ω

Midrange speaker  : 2.0 ± 0.3 Ω

Sub woofer  : 2.0 ± 0.3 Ω per coil (4.0 ± 0.6 Ω coil in series)

Courtesy of KIA MOTORS AMERICA, INC.