The speakers are nice actually, the satellites are about 6 or 7" tall, and the face is about 2.5" wide or so, and about 2.5" deep. The center is wide, but small and light..it can fit anywhere. The speakers have the fiber or cloth on the face, not the cheaper painted metal mesh, so they are pretty nice looking. They are not bulky at all.
The sub is a good size for this setup, multi directional design as well, the sub fires from the bottom. I think it sounds great, Its sounds clean and tight , even with higher volume.
My rear speakers are wired. I am not sure how long the rear wires are however. I had to extend my right surround speaker wire, about 5 feet, but it had a rather long run.
After everything was in place I did the auto-calibration with the supplied mic. I set up a stool where I sit in the middle of the couch, and placed the mic there. I did the auto-calibration, checked the results, and then listened carefully with a few audio sounds on a calibration disc. Everything sounds even, I think it worked well. It was also pretty accurate auto-detecting the distances of the speakers from the calibration position.
It sounds great, you won't be disappointed.