"4.5cf tuned to 30hz for daily... 4 aero ports 36" long... face the sub up and the ports out the end. for comps use shorter ports... start about 15" long and test... cut some more off then test again.... till you find what length is the loudest. you can get buy with 3 ports, but it wont be as loud. if you have win isd you can calculate your ports yourself... just use the XXX specs to get your port tuning... "
36" long.... EACH?
15" long ....EACH?
Alil confused.... can someone help me with this design?