CLX ART with 2 sub connections


I have a stupid question. I’ve heard great things about the Martin Logan CLX Art and wanted to invest in a pair. But upon looking at the connectors in the back of the speakers, I see no connection to external subwoofers. I read that they have some sort of “custom filters” I can get to hook up to a pair of descent i or the balanced force. Yet, I see no speaker wire connections to the subs (they only take RCA or XLR). So how do you go about hooking up a pair of subs to the CLX Art? Thanks! 

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As per @jderdock has said … however you can also take the signal by also attaching the spades , bare wire of your subs speaker cable to the inputs of the CLX’s together with your main speaker cables from your amps .

I experimented with all three methods and had a slight preference for the method I have described into Descenti’s with internal CLX crossover cards  

Descent I do not use downloadable custom crossover, that feature began with Balanced Force models.

You can run Descent I without the internal CLX cross-over card but it is preferred (it  integrates the the subwoofer with the low frequency roll off of the CLX).

Connections are as described in the posts above, personally I use RCA O/P from my preamp and the balanced O/P from the preamp feeds my mono blocks.