Rel B2 or JL Audio f 112

THANKS for all opinions. I decided to go with JL f112.
I have Class D Power Amp and it's not recommended to use
REL hook-up (speak-on) cable. Just one more question.
Do I need separate crossover for JL's or I can run interconnects directly from Preamp using JL's onboard
Crossover. On their site separate crossover is recommended.
Thanks again and Happy upcoming holidays.

Interconnects into the JL and adjust the crossover freq and slopes on the JL. Run the ARO prior to setting the crossover/slope points.There's a level adjustment on the panel also if needed.

I am in a similar situation looking to grab an F112. Slight difference is I went with the new paradigm signature s2's. I dont like the sound of some of the tower speakers so I wanted monitors. Now I need to fill in some low end.

Using integra 9.8, 3 2 channel bryston st amps (2bst,3bst and 4bst) for center, surrounds and fronts (respectively).

I planned on using the balanced outputs for the 4bst and then the rca's to the f112 (just one for now) and adjusting the cutoff frequencies on the f112 and either letting the sig s2s run full range (no issues) or setting the integra to send just 40 and above to those.