Re: Speaker placement/direction
This is one of those questions that opens up a can of worms. It can be depressing once you really dig in and find out what happens in the car with sound waves in respect to our hearing, but then you use that to your advantage and learn to live with it.
Speakers low and forward in the door will reflect sound off the center console. Reflections cause phase interactions that can be constructive and deconstructive. In this case the reflections off the console cause a null. Nulls can't be fixed with EQ, only with installation. Your 5 degree angle of the speakers might be helping slightly, but probably not enough to be noticeable if you went to a 0 degree baffle.
As for a balanced sound with those speaker locations, the farther speaker will naturally sound louder because it's pointing more directly at your right ear. There's no easy way to get it to sound balanced for both you and your passenger. Tweak your head unit settings to sound good for you and it will sound worse for the passenger.
New online business launching soon. Specializing in car audio system designs and sales for those seeking great sound.