MrNC

Thank you very much decafcappucino, im cool with 33hz and 7.1cuft would be enough, I have to drive a little over 3hrs to go pick up the wood so when i get some time off i will go pick it up and start my build and post pics for everyone to see

Here is my new box 38x22x24 port 5x20.5x18.25 8.163cuft after port displacement and its tune to 31hz

Also Mr boon i seen your thread where you was talking about my install and it was funny i never said i didnt know anything about car audio i just said that i have never built a ported box before, and they are 15's not 18's. also i never said i will be giving it the full 10k, and nobody knows everything ok some people come here to learn im sure you was not the best when you started and your probably still far from great so dont put down other ppl ok. Thank You

I'm not gonna be giving it the full 10k the amp will be turned down, i was gonna order 2 more BTL's but the time it will take to get here in Germany i will be in Iraq already so im just gonna run the 2 i have. Mr. Boon i went with 14cubes cause i knew after sub,bracing,double baffle, and port displacement that it will drop, yesterday some guy gave me a re website to go to and after port displacement it put me at 9.674cubes and thats not including sub displacemt, bracing, or the second baffle. and its tune to 33hz

how much smaller should i make it... on the FI page it says 3-5cuft per sub

Anybody?

Hi, I have 2 15" 08 BTL's and im about to build my first ported box and i would like to know will this box work 46Wx24Hx26D i will be using a L shape port which will be 9"W x 22.5H" x PL1 16.25" x PL2 8". I think its about 14cuft before port and sub displacement. Do you guys think this will be a good box for these subs its going be powered by a Hifonics XX maxximus, I will be doing the big 3 as soon as i get my truck back its a 99 GMC suburban and i will be leaving the 3rd row in