What is up with my car stereo?

Question

I just had a Alpine (SPR-17S) component car speakers installed into my car, so I have two new midrange speakers and two tweeters hooked up in the front of my car along with two crossovers. The sound is pretty good, however the two midranges are each playing a different frequency and so are the two tweeters (driver side midrange seems to be playing higher pitch stuff while the passenger side midrange is playing a lot fuller of a sound). This doesn't seem right.

Does anyone have ideas as to what might be wrong?

Could wires be mixed up and one up my midrange speakers be plugged in as a tweeter?

The car is a 2003 Nissan Sentra but thats probably irrelevant.

Answer 1

It does sound likely that the wires are reversed on the driver's side.  The crossover has three sets of terminals, side by side; the input terminals, the midrange outputs and the tweeter outputs.  It would be fairly easy to mix up the woofer and tweeter outputs when connecting the crossovers.

If you paid to have it installed, take it back and ask them to check it.

Answer 2

I'm guessing the wires are messed up... Although its sort of the same thing with headphones, some of them play the vocals and low bass in one ear and in the other is the rest of the stuff. It sort of makes the brain think that its all together.