I may not have freedom of placement - stacked up against the wall, with the mouths facing the corner and exciting all room modes equally, is what I thought I read was best anyways (corner first, against wall second, free air worst).
Placement and loading is simply about maximising output.
If you corner load that adds +12db for free. Or, to put it another way, you don't have to build 4 cabs for the middle of the room, you build one and corner load it to get the same output as the 4 cabs.
So, decreased driver costs, less power, less build time.
That has nothing to do at all with room nodes.
If, regardless of where you place your sub, you end up with a null in various parts of any room, that is due to room modes. Adding another sub in another part of the room more often than not addresses room modes, it is not about increasing overall volume.
The best way to work out best sub positioning is to place a sub in the LP, and crawl around the room to find where the bass sounds loudest. That's where you place your sub. If that placement exhibits nulls with one cab, then, more often than not, another cab on the opposite wall will address those modes.
If that doesn't work out in real life about where your plan to place cabs, then you need to go back to the drawing board and make another plan...
2 x DR 250 (melded array) with March 2012 plans.
4 x 20" BP102 T39's, 2 x 28" 3012lf loaded underway.
3 x WH8 with melded array.Bunter's Audio and Lighting
"like"s would be most appreciated...