im getting a 15 BTL and it will be powered by a zx2500. i got this off the RE calculator. i did two different port widths. which do u think i should go with? feel free to make suggestions to changes. this will be my first build.
33x17x21, 67.5sin port area, (volume - 3.8cuft), @ 32.68hz (this is with 4.5in wide port)
33x17x21, 60sin port area, (volume- 4.3cuft) @32.5hz (this is with 4in wide port)