Adding two JL Audio F110's to my 2 channel system

I am running Focal Diablo Utopia's with my BAT vk-300x integrated.  As good as the Diablo's sound they need a little help in my 2800+ cf room.  Hence, adding two F110's.  What is the best way to hook these up?  The f110's have a balanced Neutrik receptacle as well as line level inputs.  I would like to use the balanced preamp out on my BAT.  So, do I need a balanced cable with Neutrik connector on one end for the sub and standard XLR connector on other end for the BAT?

BTW, tried getting a hold of JL audio but customer service never answers phone or returns messages.  Any guidence would be appreciated.