Rahul, I figured out the problem........That's NOT a DNA-360 that you're using and testing.
That's the 350. I can spot them easily. Different diaphragm, phase plug, internal foam, different screws, terminals, etc.
So I looked back at your order from August of last year and you did indeed order the 350, not the 360.
That was a lot of worry for nothing my friend.
I hope you can change the first post so people know that's not the 360 because it makes them look bad.....when I know they're quite nice. There was a LOT of work put into the 360 and many people have tested them. I hope anyone that read this thread gets to this page to see that there was a flaw in the graphs.
Honestly, I read this thread last night and the charts really baffled me. Actually I would say they upset me a bit. I think my last post edit was about 3:00 in the morning.
I kept thinking to myself, how in the world can those charts look like that, I test every single driver before shipping. I'm nuts about it too. For the 360's, I take it a step farther and test my DE250's first, leave the measurements on the screen, then test my 360's. No 360 gets shipped unless it extends further on the high end and at least matches them on the low end. That was the goal for that model from the beginning and I want to make sure that's what people get. It was a lot of extra work, and my living room has been turned into a CD testing facility.....but that's okay.
The 350 has a recommended crossover point of 1200hz. If you ran it at 800hz to keep up with that big woofer and tested at 700hz, I'd say it's been strained way too hard and that's why there are issues. That's way under where it should be and simply not intended to be used like that.
It's been mentioned many times that the 350 should only be used from 1200hz on up, and also says that on the site. If you want to send them back for an upgrade to the 360, that's fine. Or send them back to me and I will change out the guts of that 350 for you. Either way, the problem has been figured out. I feel relieved, but this thread is going to be confusing for some.