Lyngdorf 3400 using external amp

For an experiment I went balanced out of the Lyngdorf to my Krell KSA 200s to power my speakers. I also have 2 subs hooked up via rca outputs. When getting into the Lyngdorf menus to set everything up it appears I cannot do a high pass crossover to the speakers and low pass to the subs. Seems the crossover is applied to all analog outputs the same. I could run the mains full range and then set the crossovers individually on the subs but would prefer not doing so. Am I at the end of the road or am I missing something? 

thanks all. 


Honestly, I’d just contact Lyngdorf on this one and cut out the middleman (aka, us).  They’ll probably answer your question completely and definitively in a few sentences.