Thanks for the info Ed, I appreciate the help. BTW, funny story. I was trying to sneak the sub into the house before my wife got home, knowing she'd not notice it for a long time if I hid it in the corner of the TV room without her seeing. Unfortunately she pulled up as I was carrying the 80# of subwoofer in the front door. She wasn't pleased. She yelled when I explained what it was, "that speaker is completely pointless!" To which I replied, well sweat heart, it is a cylinder, of course it's pointless. Which thankfully made her laugh. It is now officially named the pointless speaker and her level of irritation seems to be back to a basal level.