The other day Federal Express summoned me to the front of my building. What delight awaited? It was Onkyo's HT-S990THX. Some would call it the first THX-certified home theater in a box though the Onkyo and THX people prefer the term "integrated THX HT system." HTIB or not, all 143 pounds of it were literally in a box, one box, only 14 inches shorter (and five inches wider) than my refrigerator. My building has elevators, but there are five steps between the ground floor and the sidewalk. The FedEx guy and I stood on the curb staring at one another in dawning horror.