2002 Honda Accord Coupe Whine

I had a question for whoever would be able to help me with this.

My Honda Accord Coupe 2002 has a whine, and when I press the gas it goes up and down. I recently replaced the alternator, but it had a problem before that, as well as it having a problem with it before I had the radio switched.

I think it's a blown speaker or a wire is crossed wrong, it still plays music, but the whine I can do without. I had the battery checked and it's working fine. Any thoughts as to what I could look at to fix it? I'm able to do the work myself since my funds are low, but I need some sort of direction as to what I need to do to figure this out.

I appreciate any tips or suggestions. Thanks!

Clean and check tightness on all grounds.

Okay, I'll have to check and see where my grounds are, I'm new to fixing my own car, would rather do it myself than pay someone else to do what I'm able to. I appreciate the input and I'll see if that does anything.