[PunkMunkey]

[quote=Pirate;880637]I was under the impression that I could place the subs to the left and right (next to my fronts) and that would flatten out my overall reponse. Stacking wouldn't be an option.QUOTE]

That might be a good place to start. However, there are a lot of factors that affect sub response...distance to any walls, distance between main speakers and subs, distance between subs, distance to subs from seating area...you get the idea.

All those factors influnece the sub's response...when you think of sound as waves with peaks and valleys it gets easier to imagine the interferences that might occur between speakers...depending on placement, the sound from one sub may be "cresting" when it reaches the listening position while the sound form the other sub may be "waning"...the soundwaves from the subs would then effectively cancel each out giving you weak bass.

All this can be correctd with placement and by messing with subwoofer phase, but it's a bit trickier than working with just one sub.

You might be able to do the "sub crawl" twice to locate your subs and then dial them in precisely by using the phase adjustments on the subs themselves...this should yeild a good result.

In any case, you really can't just place the subs arbitrarily next to the front speakers and expect the best response...do the "sub crawl" and use an SPL meter to see, for sure, where to best locate them.