For what its worth bass frequencys are multidirectional. A good home theater system you shouldnt be able to guess where the sub is placed. But with it to seem like your getting hit with something you need the sound pressure to be coming at you and with a good setup your front speakers should be able to reproduce the bass feel coming at you. Also whoever hasnt played Xbox on a 5.1 system is really missing out. Its like being in the effing game. True sounds of a monster sneaking behind you, explosions, etc. You got to hear it. Its absolutely amazing. as far as 6.1 and 7.1 it seems gimmick to me..... Damn I still need to invest in a Denon reciever to replace my older kenwood touchscreen reciever.

Prologic IIx Ill have to try it out. I dont know how well it can code an analog signal to true surround if it wasnt even recorded for that effect. How does it know to send the feed to the rear left channel or any certain speaker?