Well, I'm completely unqualified to answer this and probably shouldn't but my first thought was that I would be worried that if you do not get a perfect conversion of your analog signal that you might be in danger of clipping early as you approach 0 dbfs. How much or how dangerous this would be, I'm not sure.

I also do not believe it is the purpose of the crossover to protect you from such an effect.

That being said, ignore me because this is unqualified speculation.

With great power comes Awesome irresponsibility.