Hey Q, just as an heads up. I'm not really sure if this is because of the first batch of spiders you've received or not. I just know it's kind of been an common thing now, at least between the subs I've owned, along with others I've communicated with. When you move the spiders in an up and down rotation, one at a time, you hear this funny noise. It's not audible during play, and it's not with every subwoofer. I know you've always taken good care of everyone, and don't mean this thread to come across negative. Just informative, as it could be something to look out for in regards for the October shipment. Defective DSS Ethos Spiders: http://youtu.be/MrFsxtiQwys