Seriously dude, don't mess with a sub. When it's done right it's MIND BOGGLING but...it's VERY hard to get it right and virtually impossible with the conventional approach used in consumer gear (I've never heard it done right outside of a studio setup). It's almost impossible to get them to integrate properly in terms of frequency response, time alignment and phase coherence. Genelec does it all with DSP processing in the digital domain and MAN OH MAN it's something to behold!!!!!
Edited by listenCarefully - 1/20/13 at 1:37am