Subwoofer slam vs boom

Between using the corner or not is really a setup / integration issue from my experience. Since the corner is more active, it works best from my experience to leave a gap between where the bass in the speakers ends, and where the subwoofer takes over. If the sub is not in the corner there can be some overlap of the subwoofer and the bass of the main speakers.

The boom you hear in the corner under this assumption is that fact that there is too much bass at the cut-off frequency. The subwoofer, the speakers, and the corner of the room all taken together, is producing too much bass at that frequency.

If you adjust the subwoofer well in the corner, this gap will have bass partially from the speakers and partially from the subwoofer. If integrated in this way, you won't be able to tell where the speakers end and where the subwoofer takes over (Seemless integration).

Seantaylor....I agree it can always just be your corner compared with the rooms I have integrated. Carpeting versus hardwood floors matters also. There is no one single way that works for all, as is everything in audio. That is why I also mentioned how overlapping the roll-off has worked for me away from the corner.

No matter what the cause, if someone is using a quality sub, with too much boom, it is probably a sign of too much bass at some frequency.

Richard E. Lord (REL) from what I have read, tried to designed his subs to go in the corner as a first resort, if possible. I think many people want the sub out of site, especially in Europe.