Just got a call at work from my wife and the speakers arrived a few minutes ago just as she was walking out the door. She said 6 boxes arrived, yet I only ordered 5 speakers (2 mains, 1 centre and 2 surrounds). Apparently one of them is only something like 8"x4"x2". Anyone know what it could be? Is this typical for Axiom?

It's going to be a long day at work and another night of lots of tunes and little sleep.