I have no idea...can't hurt to correct it. I think it would reverse phase. Here's a thread you should read...Interesting! I just had an email back from the guys at Zilla I asked them which wire connected to which terminal on the speaker. They said the black one is positive and the blue one is negative. I remember opening up the cab yesterday and the black cable wasn't on the positive terminal. they were swapped. Would that make a difference?
Been looking for the thing I read about first run defects but can't find it. However, even the fractal admin says these require a powerful SS amp in one of the posts.