If this was the case I would have replaced my drivers a few times. My receiver is at 1+, sub gain 11:30(about 6db hot), ss fiter ant 20hz and all ports open. I know this is NOT recommended and have been told by Ron and Tom that this would be detrimental to amp and drivers, but I've running these setting for about 2yrs with no problems. Running with these settings for 1yr with the plus/2 and a year with the ultra/2. I frequently listen at -5 of reference and refefence level whenever the the family is away. No distortion, no bottoming, no problem. My room is just over 5000cubed.