I need a little bit of help theirs no info about t lines really the best info I've gotten was off of a smd forum speed travels at 1130ft/sec so i divided 1130 by 32 Hz which equals about 35.32 then you dived 35.2 by 4 to get 1/4 wave you end up with 8.83ft. Is the 8.83ft the cubic feet or length of the box. Also to find the port area since i have a 12 (11 inch cone) dived 11/2 which equals 5.5 so then you do 5.5x5.5x3.14= est 95in of port area. My question is is the box cubic feet 8.83 or is that just the length. The subwoofer is a American bass xfl 1222 (fo Hz 31.9) (qms 3.826) (qes 0.465) (qts 0.415) please help its my first time building a t line.
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