Yes, but it is still considered one sub.

I'm not sure if just that little bit of distance makes a difference, or not, which is why I said I may be corrected. I see the two drivers of either the EP800 or the stacked EP500s as a way to move more air, which is a good thing, but maybe not intended to replace the effects of two well placed subs.

With great power comes Awesome irresponsibility.