Update: I got the speakers hung today. 30 foot spread and I used 2, 800lb chains (12" long), mounted to eye bolts going thru 2X6 lumber. I still have to attach the bottom chains, to angle them downwards, but this job was enough for this old guy today. Thanks for the input fellas. Now I gotta get some help and get those TVs off the wall and the projection screen mounted (on the floor behind the ladder, it's 9' wide) and motorized.