Spending hours listening to some of the recommended materials, and played with all the available setting on the subs. In the large room size that i am in, we narrowed down to 2 settings which we prefer and produce a great amount of satisfaction. \n\n (A) 1 port open, EQ2, Q Control 0.7\n (B) 2 ports open, EQ2, Q Contorl 0.7\n\nBoth of this produced some really quality bass and sound. It largely depend on what type of songs that i play. If i play R&B type of songs, (A) works great. \nHowever for other type of songs, (B) works better as it produce more sound stage like listening in a concert. \n\nMe and my wife decided to go with option (B) for now. And maybe change to option (A) once in a while if we are into R&B song day. So far, i am happy with the performance.