The 2.4 Ohms isn't an issue when the XO is set at 40hz and up in a receiver any way. Only those running a 2 channel system would need to worry about it and even then a proper amp should still be able to handle it, like all the ones Axiom recommends. I know many speakers have drops this low, as I have mentioned many times, the M22 drops into the 2 ohm range and no body has a problem driving them.

Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70