What do you guys generally run your door speakers at? My kappa perfects are supposed to handle 100 watts.(I have heard they handle more) I have a 4 channel 110 w rms amp, but the sound just doesn't seem loud enough. Is it possible to hook up a 4 channel amp to run like a 2 channel and increase the power for my kappa's? Or will that cause problems. Also, does having your interior out cause a decrease in the amount of db the speakers will put out. I have my carpet, headliner, seats, etc, out of the car. Would this make the speakers sound quieter than they really are. I know it would affect the sq. Is there anything I can do? Thanks,