DD 1508s box build

[Jordan Guess]

Hello, I just purchased two DD 1508's and am going to be putting them in my 1987 single cab toyota pick-up. I am short so it allows me to have my seat pretty far forward and I can get quite a bit of room back there. DD suggests that I put them in a ported enclosure and tune it to roughly 38 hz. Has anyone experimented with 8's and know of a better frequency to tune them at? If not I will just go with the 38. Next, I couldn't find an exact xmax on these but after reading around I discovered its about 15mm so on my port calculator it suggests I use roughly a 4" port at 20.5 inches long if I am putting it in a 1 cubic foot box. My main questions are these: will 4" pvc pipe at 20.5 inches long suffice at 1 cu ft.?, should I make a box separate for each sub or put them both in the same box and just make it bigger?, and lastly has anyone had better experience with completely different enclosure volumes and port sizes for 8's? Also if anyone would happen to have the sub displacement volume on these subs that would be great. Sorry for the nooby questions but I am just struggling on how I can get this to work in my vehicle. thanks!

[Yirgacheffe]

Hello, I just purchased two DD 1508's and am going to be putting them in my 1987 single cab toyota pick-up ...

... Next, I couldn't find an exact xmax on these but after reading around I discovered its about 15mm ...

I think xmax it's about 55 mm for DD1508, but some say that xmax is a bit pointless to compare since there is only one of all parameters.

(written on my iPad3, with automatic misspelling by Apple)

[Jordan Guess]

thats peak to peak im pretty sure. 55 mm of xmax is aloottt.

[Yirgacheffe]

With a nice box and sufficient power the DD1508 can simulate quite a big fan in my opinion. Also think one can start with building their first box straight from DD recommendations, but mostley for fun and game.

(written from My iPad3, with automatic misspelling by Apple)