Originally Posted By: jakewash

The economical part I suspect is in reference to the lack of buying seperate EQing equipment and room treatments, not in that it works better for cheaper subs.

You're mistaken. See for example:
Are three inexpensive subs better than one expensive sub-Dr. Earl Geddes Approach

Greg
VP180, M80s, M22s, QS8(4), CSW S305s, EP500, Pioneer VSX-90
M2i, M3(2), Pio vsx-1020