What JL Subs to pair with Harbeth SHL-5 Speakers?

Bob reynalds,
I use the high level inputs on my REL Strata iii, so the cable is hooked up to the speaker out terminals on the amp.I see where you heading, and you present an interesting consideration. However for my setup it isn't applicable. Thanks

Bob reynolds,
I enjoyed the conversation.

I use two e112 subs in my system using the internal high pass between my pre and amp. I also tried the same setup without the crossover and passing under them main for a more common setup. There is no substitute for the crossover. Without it they sounded slow/off pace but with it turned on it is seem less (enough for all but the extremely picky). But I wish the e112 has room correction, or they could add the crossover to the f112.