SabrinaX Sub-Crossover


First time posting. I recently got a new pair of SabrinaX speakers and paired them with two Martin Logan 1100x subs. The system together sounds incredible. The SabrinaX is rated down to 31Hz. Where should I cross-over the subs? I did it at 35Hz with a steep roll-off (4th order) but wondering if people with more knowledge have any recommendations? 

Thanks!

upstateaudiophile

I realize this thread has evolved into “help me make my system awesome” so last question. Do I go with Transparent Audio Plus or Super cables? It’s 2200$ for Super and 1100$ for plus. 
 

thank you all again. 

For anyone who stumbles on this thread down the road, I crossed at 45Hz and paired with Transparent Audio-Super speaker cables. I tried Robin Hood Zero, Nordost Heimdall as well. The Transparent were the clear winners to my ear and like others have said, a sonic match for Wilson speakers. I felt the Robin Hood was a bit dry and the Nordost were very much too bright. 

If you're into hyper detailed sound then yes Audience SX are a good match.  If not,  then I would highly recommend against.  I tried them with my Sonus Faber Olympica 3 and sold them within a month.  Wilson is the total opposite of SF.