Speaker Whines

[pwerz]

2001 Explorer Back speaker in right rear whining with engine .You can hear whine increase and decrease with engine RPMs.Front speakers okay.
Any ideas ?
Thanks Paul

 

[sjr033]

We will need to know more. W@hat is you current set up? Is it stock or after market?

 

[pwerz]

Stock

Original equipment . Just got in the other day and whine was there,
Right rear only . I believe thats the subwoofer speaker

 

[Germ]

Check your grounds for you're radio...If you have an amp that is pushing the stock woofer check the ground on that amp...What you are hearing is whining from the alternator...which is usually caused by a bad ground and also if speaker wires are too close to the power wires.