just bought 2 re 8's and they should be coming in the mail within the next week and want to get my box done before christmas.

going run them off a PG Xenon X400.1, so ~400w rms @ 1ohm

and idk how many cubes to make my box??

re website says .5cu for optimal ported, should i go for a 1.25cu ft. box or will that b too big??