MidTexRam

Markous I am glad you posted that information (hard to find in searches). And thank you CleanSierra for pointing out my poor homework and math. Back to the wood shop.

I thought i was cutting it very short with a 3" port that short. We will see tonight when i test the box. If i get port noise i will have to change the rest of my build plans, make the box longer and slot port it. I guess my biggest question is how wide a vent will be too wide? is the goal to get the largest area that hits the desired hz level and will fit in the box?

i am almost done with my X-10 d2 build. I went with a 23.5L x 13.5T x 13D box out of MDF for my megacab upward firing (port and woofer). I used a 3" aero port 9.75 --33 htz(wanted a 4" but not enough room with amp racks and batteries to make the box bigger). total gross size 1.83 net with sub, port, bracing 1.43. I hope the port will not be too small and that it will sounds good. Pics to foollow.