Using XLR to Rca adapter

I want to use an active crossover and the crossover, JBL M552, has all XLR in and outs. My ins are XLR and the Low frequency amps are XLR but the problem is my amps for the mids/highs is RCA out only. Any advice? Is there a good crossover out there that would offer both balanced and RCA? I haven't purchased the crossover yet, wondering if the crossover M552 could be taken to a pro and have tech change out the XLR for the High Freq. to RCA.....any of this sound logical or is there any better solution? The speakers are for JBL 4345. Thanks. ssrobw

Newbie xlr question: with a 1 meter length, will moving to xlr bring any advantage over rca ICs?

Never liked adapters. A good adapter cable sounds better, IMO. I recommend this one: http://www.cabledyne.com/rca-xlr-adapter.html. BTW, I now own most of the Cabledyne line so I am biased. No affiliation with them, just a happy user.