hmmm.. 4th order after you seal off the old mounting holes?
ELE 15.22 but they are not the new current ones, these are the old ones from 2002 with the 818 motorsAre those ELE15.11 or 15.22 woofers?The QTS appears to be quite a bit different between the two (which is going to greatly affect the efficiency in a 4th order).
ELE 15.22 but they are not the new current ones, these are the old ones from 2002 with the 818 motors