How should I set the crossover on my receiver for just 2 main speakers

[RoadRunner6]

A couple comments and a question:

If you can manage it, use a third C100 as a center channel speaker. The C-C100 looks like it will do the job but these center speakers with multiple drivers arranged horizontally are a sub-optimal design from an acoustics perspective.

The ESW-8 does have terminals for speaker-level connections. Really much better to use the line-level sub-out if that will work for you. If you do need to use the speaker connections, I think you'll experience problems if you try to follow RoadRunner's recipe for that. His recipe for the line-out connection looks delicious so let's hope that works for you.

I'm curious to know what's the difference between a music and theater subwoofer. This is the first time I've heard of a distinction.

Yes, I would have mentioned that to him but the C-100's are sold only in pairs. I in fact in my system I have three identical speakers across the front, LCR (the preferred orientation which very few are aware of ... no center channel speaker over on its side for me when practical but let's not confuse him now with that).

The Energy ESW-8 has speaker level in connections only and no speaker level out connections Look carefully at the back panel. That is why I made the comments I did. He doesn't need the speaker level connections like I mentioned because he in fact confirmed that he has an AVR receiver with sub output and bass management.

The fact is that the Energy ESW-8 sub and many other newer subs now do not have both speaker in and out connections, or neither. That is because the large majority of buyers of subs of this class intend to use them in 5.1 or 7.1 HT systems and only need the RCA input. The manufacturer saves a few bucks. If a sub is used in a 2.1 system with no sub managment then the sub should have both in and out speaker level connections for the easiest setup.

RR6