Hello; I am in the assembly stage of my Kit 281's and have a couple of questions for the people that have already built these babies. 1) How close together are your xover's? Does it really matter how close together they are? 2) Where did you locate your xover's? Behind the woof/tweet? On the back panel or the side panel? 3) How high did you locate the input cup from the base? 4) How long was the center tube of the port not including the two flared pieces? Thanx for your help! I can't wait to hear these darn things. Paul.