I would love the plans I want to build 18 pals been looking for plans my tops come down to 90 hz. I use 2- 6.5 speaker on a parallel lens and 1- 2 radian 950pb parallel lens and 4- 6338 McCauley 12 in each box and I have 4- 18 tapped horns by tom danely so I want more 20 to 60 hz sound thxz Denis