So I hooked up my new denon amp and new rainbow pro comp speakers today. Everything is hooked up and all the grounds were checked twice. The right tweeter is PERFECT, but the drivers side tweeter as a very loud whining noise, when you accelerate the pitch of the whine also increases, very odd. I have tried everything, my rca and remote are ran on the opposite side of the power wires on my fd. The noise will completely go away though when I put the amps crossover to low pass, but than i can barely hear everything. Its not the tweeter, and its also not the wiring from the crossover to the tweeter as those were all checked. Ground on amp and hu are fine.All connections are good, I do not know what is going on and would really like to get this fixed by tomorrow as I am going to tampa and would like some music. Even with the whine these rainbow comps are out of this world, and 10x better than my old alpine type x comps, but they should be more $600.

 

engine whine noise usually occurs when one wire is plugged in backwards. try a different ground, make sure none of the exposed wires are touching any part of the car body or being grounded.