if the amp has a subsonic filter, you set it to 75% of the box tuning. low pass filter should very high and the head unit should take care of that. Low pass on the head unit will be 80hz.
Settings is up to what you have. Bass boost always at 0. You can use it but it's hard to use it right without a RTA and O-scope.So i have the box port tuned to 34 hz what should the gain fz and bass boost on the amp be the bass has an onsane difference between ported and sealed