How to set up REL Subwoofer?

Wdt: Sorry I can't help.

As far as using my new REL; this thing is fantastic and integrates perfectly with my Dali Motif LCR speakers. I'm only using it with LFE at the moment, with stock power cord and HiFi Tuning Fuse, but the bass is so well defined, with tremendous punch and authority, and no flabby rounded edge or "BOOM BOOM" rattle/vibration. No room integration problems either. Feels/sounds like I'm in a movie theater. Also reminds me of my Horning Agathon Ultimates bass. Can't wait for my subwoofer and custom speakON cables to arrive, plus speaker cables (note; switched to WireWorld. Analysis Plus dealer had a mental breakdown with custom order). Decided on Oasis 6 subwoofer cable and still figuring out details for custom speakON cable.

Can I go sub woofer output of my preamp into the REL Hi-level balanced input ?

Can I simply use a speakon to 3-pin xlr male adapter and connect directly to my preamp xlr sub output?

I don't want to use the REL neutrik speakon cable and I don't need/want to use the RCA inputs on the REL B3.

I don't know. Best to contact Sumiko or REL direct.

Have Bel Canto 500m amps and getting the Rel R 205 sub.

Any problems to hook this sub up to class D amps?

Similar question. Just got T9 to use with 7.1 ht with triad gold monitors for front 3 channels. If I want to use high pass do I need a dedicated channel from my Cary 7 channel amp or do I piggyback on another channel