Yes, my L12's are up and playing music!
Odds & ends:
All control knobs have little click stops to make setting easier. The feet are 1" round hard rubber. Cabinets have the "black matte" finish. It has a texture and is somewhat automotive in appearance. Definitely not a furniture finish, but for me preferable to the vinyl black oak. Rythmik gives a spec of 58 lbs shipping weight. According to UPS 49 lbs. Out of the box they are over 40 lbs.
I have mine set up alongside the mains to the inside of each main. This looks somewhat imposing. The decor is better if the subs are pushed back closer to the front wall, but having them away gets rid of a nasty suck out @ 145 Hz. WAF (if you have that problem) will depend a lot on location.
I have the L12's crossover set to 80 Hz and the high pass on my Crown XLS 1502 (LS50's) set to 100 Hz. Both are 4th order. This is highly room and system dependent.
My
subjective and sighted opinion of the sound is the bass has far more definition than the single ML Dynamo 1000W. The subs sound totally integrated with the mains. They did not before. I am using a much higher crossover point because bass directionality is no longer an issue. The system measures differently with and without EQ. The difference is large.