As of now it is tuned to 20.4 Hz. I will get some screen shots of the curves...
As a side note, as mentioned before I decided on using 2 12" dayton High Fidelitys and the 1000w plate amp. Ca you think of anything that for the same price that would offer more performance? The goal of this sub is earth shattering low freq. HT audio. I think with these drivers and 1000 watts, tuned at 20 Hz, it would be pretty ridiculous...