As price does play a role in all purchase decisions, 2 EP400's are roughly the same as a single EP600. With the 2 subs, you get the advantage of getting a more uniform bass response in all the seats in the theatre...but less chest pounding bass, a single EP600 will give you that headroom, and chest pounding bass...

But how much more exactly does the EP600 give you? Enough to not get TWO E400s?

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