I haven't bothered reading this thread yet, but I would like to point out one thing. When I stated 3 years ago, that there was a 6db roll off at 60 hz, I was trying to give some kind of picture as to the severity of the problem. That is not a measurement that I have made. I would say that the most accurate description of the problem is the lopping off of the bottom octave. If you are in an accurate listening environment, the low end energy loss is quite apparent when compared to the original 2".
As I have stated many times, this is a glaring problem. I do not expect the HD unit to sound exactly like the 2". I do however expect it to be relatively close. When I make the same transfer into a RADAR and compare, while I still prefer the opriginal 2" for obvious reasons, the differences are negligible and I am able to move on without feeling that the integrity of my audio was destroyed.
That's all.
Carry on.
Mixerman