I am running the sub in 1 port open and the CCB8's with both ports open.
I am planning to do some experimentation but to be honest I'm just enjoying them more than tweaking right now because during the holidays the house is a wreck.
Once we get all that put away I'm going to be looking at adding more CCB 8 to my primary listening plane and hopefully getting some HB1s for my height plane. (currently 7.3.4)
When I put my receiver in full multichannel stereo mode for music it's abundantly apparent how much more clear my CCB 8s are than the rest of my system.
I really can't even describe how pleased I am with my Hsu products, I'll be adding to them as soon as it's responsible to do so haha.