I can set my individually and I keep them at 80 Hz. I think that is a good setting for overall listening and that is what THX specifies.

You might try a couple of settings and see if you notice any difference.

The Rat. M80s, VP-150, QS8s, SVS PC 20-39+, OPPO, Onkyo 703s, Harmony 880 Sony 60" SXRD HDTV