I think the manual will help, but the advertising material on the A16 states it can simulate the height channels. A few days ago, we were talking about putting bookshelf speakers up at an elevated height (search for posts this month mentioning milk crates, or maybe it was at the end of July). So, you can use the one Speaker measurement method, or you could get a fairly good simulation. @esimms86 Pardon my denseness (blame the 180 minutes of exercise and blisters on my feet), but what advantage does having two room PRIR’s give me? Just the luxury of more choices, or can they be combined somehow?