I think you may be partly right there Darkmatter, Ken subs are unique in certain ways and deliver a very clean response which gives it such great impact in movies but are also lightning quick and articulate for music, he will not give away all his secretsThanks for the compliments. In regards to the rotating 90 degrees i think the real answer is only known to ken himself. It makes no difference to the frequency response or time delay.
I have a simulated response for the room. Originally i had the sub in the front right corner under the right speaker, i found it intergrates better in the front left. The simulated response is also much better.