hi, Looking to build a box or any idea for my current setup. Basically got these near new after a few car audio trades so would like to use them if possible ported. I currently have 2 18" Re XXX subs ( yes car subs but working great ) Currently in a sealed box, parallel to a single 4 ohm load. Behringer ep4000 amplifier and a pods signal converter. I use it during movies for extra thump. I do have a paradigm ultracube and subs in my paradigm monitor p90 v3's which sound good buuut i'd like shaking lows For more box office style movies with large effects and deep explosions. I dont have them on too often. I tried a wave test and seen i get quite loud at 32-36 hz but i know ported i would go lower. I'm seeing if anyone has used car subs before, if finding maybe subs on bottom , ports top? Ports bottom subs top? Subs bottom port in middle? Etc. Size of box wont matter i can go up to 16 or more cubic foot. Attaching a screen shot from my video i had as reference. Living room is more finished now but this was my setup 7.1.