I've got a rectangular room with about 4,000 sq ft. What are the tradeoffs between on big beast vs two littler ones??

With multiple subs, usually placed on opposite walls, you can often get a flatter frequency response for all seating locations.

will two littles be able to plumb as low as the big one??

99,
here is an instructional video made by Ian.

http://axiomaudio.com/multiplesubs.html

In my experience no WAY man!... i have a EP600 that i had to have the amp serviced on... So while it was away i was using 2 8" JBL subs that i have around the house.... When the 600 was back in service... Holy Moly...a night and day difference comparison would not be adequate. I have retained one of the 8" JBL's to work in conjunction with the 600. However, you can not even hear the 8"... The only way i know it's working is the Green LED, and also by feeling the driver moving... The 600 is overpowering the 8" by that much.... I think that the little 8" is probably adding something to the room though, it's got to right?


I can not speak to a comparison of 2 ep500's as compared to 1 600/800 though... as the 500's are much larger than my little 8" JBL subs...

No, the main benefit of multiple subs is to even out the response in the room, not to play any lower frequency wise.

4,000 square feet or 4,000 cubicle feet?

cubicle feet???????

See what happens when I post while tired and while watching The Office?

And you posted it to Dwight Schrute, Ontario.