Suicide is the only option then. Maybe something in the harness area is what I can figure, your factory hookup isn't the greatest..

What factory harness, I have the ribbion type be hind the headunit, one stinking CPU ribbon, everything is tapped into and hardwired and sottered. All concections Good, CHECK. Next start replacing equipment. When my car goes in for the remote start and amp swap, I'm droping it off the day I go to vacation, Reno, NV and lake Tahoe. So my installer can take as much time as he needs. I've actually been there for allmost all of my install and pro tuning, I got to be in the shop for oh 35-40 hours of install, I can be the shop ***** and learn a couple things and also bonus I got to see everything that was done to my car to make sure myr isn't abused in any way. Better be gone when I got back. I'm getting sick of looking for the problem/inconvince. I hear a lot of whining.

my whine is in all my speakers. that makes me think it is the ground but i had it at the stock ground and it whined. moved it to the seat bolt and it still whines. some one mentioned getting some sort of noise filter but i have not used one before. as far as having one tweeter whining is strange. i believe that you have the same amp as me with fairly close to the same set up. so i am curious if the mid on the same side whines. it is getting the same signal as the tweeter it is just crossed over. if it does not then maybe it is your crossover that is the prob.