Yeah, that sounds about right. Some strange unusual problem, didn't sound like fried coils to me, it almost sounded like a rattle, but it was coming from the subs. I've seen an SX have the inner dustcap come loose, but the odds of that happening to two of them is slim. we can hook them up to my KX650.4 and see if they sound normal again.
I'll get with you again when we have more time and we'll isolate the problem for sure and you can get it fixed. The problem luv2bass explained sounds odd but feasable from what you told me.
By the way Chris is a pretty cool guy, didn't talk to him for that long, but he seemed nice.