I recently replaced the original paper hi-fi speakers on the rear deck of my '95 Porsche, with a pair of Polk Audio DXi 460P 4"x6" Plate speakers, using the exact same wire connections --- and they sound absolutely horrible. Very low volume and tiny, like AM radio. Fade to forward speakers at same volume, and you're blown out of the car. What the heck did I do wrong?
[Just FYI, I've wired and rewired and installed electronics in my own cars, boats and homes since I was in my teens and I'm retired now. Must be senility. Whatever.]
Any suggestions seriously appreciated.