SabrinaX Sub-Crossover

In room measurements are the best way to integrate subs. The in room response of the Sabrina speakers is more complicated than the specified bass roll-off and subs can help correct it. I do not know if ARC/PBK is powerful enough for good measurement feedback or not. It certainly could be. With in room measurements setting the crossover point is easy with some experimentation, especially with speakers with decent LF extension, like the Sabrinas. 

60hz with a highpass is a good starting point. Basses on the stereophile measurements of the Sabrina X, the woofer is taking a dive at 70hz. There is zero chance an 8” driver will outperform subs at 60hz-70hz. 

I read more on using ARC Genesis. It is highly regarded, at least from TheAbsoluteSound. 

@upstateaudiophile placement is critical with Wilson speakers. I would recommend setting up and dialing it all without the subs first. Look into acoustic treatments as well. Introducing limited range bass traps and treating the reflection points was a notable improvement in my room with the Sabrinas. After you dial it in, start integrating the subs, if you still think you need them. 

@audphile1

Definitely important points, I have a fully treated ideally shaped room and they were installed by the owner of the Wilson dealer. I marked their original positions in the room and made some subtle, perhaps 2 inch, changes. They are definitely in the zone of neutrality, positioned about 2.5 feet off the front wall, 5 feet from the side walls, and listening position is about 3 feet from the rear wall.

I took measurements based on advice above and also ran ARC Genesis. I currently have them crossed at 45Hz and it is sounding really good. Next step is a final decision on cables. I’m borrowing AQ Robin Hood Zero’s. I hope to audition some others from the dealer before making a decision. I read that Transparent is what Wilson has used in the past a lot.