I haven't had much experience with 2CE Signatures, but am a 3A Signature owner. I had a great deal of trouble setting up the 3A Signature. I didn't find the documentation all that helpful and, like you, I had a limited space in which I could place them and move them. Despite all this, I would say that the hard work was worth it. Mine are placed only about two feet from the rear wall (measured from the wall to the rear of the speaker). I have a large wall unit between the speakers, but the speakers are 3-4 inches further into the room than the wall unit. The speakers are placed along the long wall of a rectangular room which is 22'x12'x8'. I give you this information because none of it is ideal placement, but by making small changes, I was eventually able to get excellent sound. A lot of trial and error will eventually get you a sound which is dialed in, but pay attention to the tilt back. That is one item where I would pay attention to the documentation and then, after I followed their instructions, I would experiment with different tilt angles. Also remember that moving a speaker an inch or two or changing the tilt-back angle can make dramatic differences in how they will sound. My experience with 3A Signatures is that all the work is absolutely worth it. Unless you have a room with real acoustic problems or your electronics absolutely don't match your 2CE's, you will eventually be able to be very happy with them, but it is a lot of work and until you achieve good placement, the speakers will not give a hint as to how good they can sound.
