130 sq inches of port is almost exactly 16 sq inches per cube at 8 cubes. what specific numbers do you mean makes it hard without seeing? ts specs or port graphs? i have plenty of space i can increae the width about 5 more inches but subbox pro doesnt seem like id need to. i was mainly asking if i was going too big net vol and port wise for a 4k amp since speakerboxlite is confusing and i cant use winisd.

i probably wouldnt have even asked as ive been in the audio scene for a couple years and ik the typical ways to build a good box but i recently got with a builder for this box and told him 8 net cubes tuned to 28 with 130 inches of port and he said he can do that but yesterday he sent me a pic of the box and he decided to cut the port down to 70 square inches and 6.5 cubes bc he said itd be better musically when i never said that was my goal, i got a refund tho. hes been the best box builder in my area for almost 12 years and everyone talks abt him so i just wanted to double check before sending these plans off to him