View Full Version : obsidian 15 v2

07-14-2013, 07:53 PM
hey guys I recently got two obsidian 15's and will start building a box with two seperate chambers tomorrow.... Reason for seperate chambers is I have two american bass ph4000's one for each dual 2 sub and they are not strappable.... Going to be about 3.25 cu ft per sub after displacements but how much port are per sub should I use the typical 14" of port per cube sound good with these?? Thanks for any help