The Crown amp I'm using for the sub has EQ (that I'm not currently using) that can take the place of EQ in the miniDSP below the Schrodinger frequency (give or take) and handle the low pass for the sub. But, I've yet to find a DAC with EQ that will work as a high pass for the Belles and still pass the signal I want to the Belles.
The add on crossover I've built for the Belle bass bins handles of the EQ below the Schrodinger frequency for the Belles. /2