i personally auditioned anthony audio dual subwoofer (the one with 12 inches woofer size)at makati cinema square. this is not an entry level subwoofer. We tested it with music first, sounds ok. then we further tested it with the movie Transformer.since the movie is quite familiar to me, some scenes create better sound effects including the deeper sound on bass scenes of the movie as compared to a normal subwoofer. this subwoofer has excellent build quality,produces earthshaking subsonic deep bass especially in movies, best for medium to large size room. if you have small room,you can get the anthony audio dual 10 inches subwoofer or a single downfiring sub.
As to the dual subwoofer 12 inches, it has a dual subwoofer-one front firing and one downfiring, i think it has the same design and concept with the M&K subwoofer X series(just my opinion though) but available in the US at US$2,000-3000. anyway, sir anthony if you dont know is likewise producing proac clone speakers before and recently the JBL everest type,hehe.
it looks like imported subwoofer considering that it has shiny piano black and looks beautiful(higher wife approval factor). if you are more adventurous and not after "branded" products produced abroad and shipped here in the phils, then this one is for you.
and it will not cost you an arm and leg. i think it has only a price tag of P17k pesos cash price. high quality at an affordable price, you can spend your excess fund to other audio gears you still need to buy. the only drawback i think is that the controls are placed at the back. though almost all subwoofers' controls are placed at the back.i prefer the controls in front or on top for convenience.
this is just my opinion though,better audition it yourself.