I just received my pair, there is a strange bristling/tiny crackling noise in certain frequencies, around 40-100hz, but it seems intermittent or dependent on multiple notes of a sine wave being played. I tried everything, different power, cables, isolating the speakers from any surface etc... I wan't to make sure its not user error before I need to return them and be without monitors for a week as I have a mixing job that needs to be completed this week.
Example recorded with a condenser next to the woofer:
https://voca.ro/1jRQmZFOIxIB