The study had a lot to say about decorrelation regarding your interest so I thought I'd post it. Not being trained in acoustics I have only a rudimentary understanding of exactly what these terms mean but a good bit of this particular study came through. I have to say that I like university funded studies if only for the reason that they are more independant. While commercially funded studies of course must still provide the data and methodology; we all know how these things can be subtley tweaked towards a finding commiserate with the philosophy of the commercial entity. But yes; they absolutely said the Front to Back is a no-no.