CONNECTING A SUB WHEN THERE IS NO SUB-OUT CONNECTION

I have a Rogue Audio RP-9 preamp with two sets each of XLR & RCA outputs.  I have been using one set of the XLR outputs to run two subs.  I will get my converted to stereo monobloc Odyssey Kismet amps in a few days and will be using both sets of the XLR outputs for the two stereo amps to vertically bi-amplify my Fyne speakers.  I purchased a pair of Neutrik RCA to XLR adapters to then drive the two subwoofers off of one of RP-9’s RCA outputs.

I would insert a 2 in, 4 out, balanced, active crossover of your choice, between your preamp and amps. This would enable you to achieve greater overall system performance, increased dynamic range, better clarity, cohesion and precision and to a lesser degree the ability to address some of the acoustical issues created by your room.

When I first incorporated subs into my system, some eight or nine years ago now, I started with the high level input like most everyone else. About a year or two later, just for fun, I tried an active crossover and it ended up probably being the single largest improvement to my system that I have ever made.

I purchased a JL audio cr-1 crossover which I understand is designed to work with high-end audio systems.  It's all analog, has balanced connections and, based upon my research, it’s the best available.  I should have it in a few days.

Does anyone have any experience with this unit?