Yeah, honestly, I could have probably just used the DSR-1 7-band EQ and been happy - but since I had the DSR-1 (I needed it for OEM integration), I figured that I might as well try and take advantage of some of its DSP functionality. I mean why not start out with speakers that are EQ'd to each other instead of using a system where each speaker has a dramatically different frequency response at the listening position?
Just the EQ and time alignment features alone can make a dramatic difference. WIthout time alignment, there was NO "center image" at all - you can just hear the vocals coming from the corners of the car and the front-left dash speaker dominated the sound. Setting time alignment with measurements put the vocals right in the middle of my windshield and makes it hard to tell where the sound is actually coming from. Then the EQ just lets me tailor the overall sound to my liking. Really, that is what I was looking for to start off with. Anything else at this point is "gravy".
This whole DSP/REW/MIC stuff was all new to me - so baby steps. :-)
When I get bored with EQ and time alignment, I'll start working on the next "item" and go from there.