Being an electronic crossover it must be bandpassed as it can't send 20hz to that small 6" driver.
It doesn't have to, but it may be band limited to 15Hz; no music down there and 15Hz is normal for warp filters (remember them...)
I have to admit I thought the two mid drivers were doing the same thing, but never really thought about it before.
This type of speaker is normally known as a 2.5 way, the 2nd low driver has an additional low pass filter to extend the low end whilst not smearing the midrange.
I think you should give it a go for the price of a few metres of cable.
Steve.