yes it is symmetrical now
I have tuned them to my liking with the DSP. The parametric EQ is quite neat and useful.
I used some EQ setting screen shots I found here on the forum as a starting point and then adjusted by ear.
I haven't used REW at all and don't have a mic or line level inputs for my laptop.
I am pretty satisfied without REW. DOn't know if it's flat or what but it sounds loud and clear to me. That's what matters.
I may tweak it more in the future as I watch more movies and listen to more music.
So far I have listened to bass tracks by DJ Magic Mike and trick daddy and I can tell you the subs play quite deep and are also musical as well as good for home theater when tuned properly. Too much gain in the 30-60hz range you can hear distortion and over excursion/bottoming out. Very important to tune these properly or they could be damaged.
I watched war of the worlds, the heat and something else I can't remember but they certainly pack a punch. This is the bass you can feel in your chest even in my 5500 cu ft room.
I think the next step ight be to add two more behind the seating just for good measure :P