i recently upgraded my sound system (with Infinity kappa 3 way and Kenwood excelon amp--but kept the stock head unit) and it sounds great. but i also noticed that the driver's side's treble is much stronger than the passenger's side. i know it's not my speakers because when i reverse left/right in the amp input, it does the same thing in reverse. it's just that the passenger side has much less treble. do any of you notice this?

my guess is that may be this is intentional--since when we are driving, we are blocking the left speaker with our left leg. (but if none of you find this problem, well, then i guess i have to visit the dealer.) what do you think?

 

I have this same problem except the right side spreaker has higher treble than the left side. This past Saturday, I replaced the stock speakers with Alpine. What a difference that made!!! Just wondering if I have the wires crossed on the driver side spreaker??? (pos hooked up to the neg?) Does anyone know what color wire is the + on the driver's side speaker?

 

I have the same exact thing. When I too got my new speakers and amp installed I noticed that and the most when I had both doors open and heard the speakers from the back of the car. The driver side had way more treble than the passenger side. I personally think that the stock stereo is a piece of $hit. I even got the installer to get me new speakers and recheck the wiring but the same thing happened. At this moment I cant bother with this crap any more.