Kef LS50 - can it handle a subwoofer properly?


I just got a pair of KEF LS50 speakers. As is known they are active speakers and I'm considering adding a subwoofer. They have facilities for a sub but what should I do regarding bass management?, they don't have an  amp, so no such feature, and I suspect the sub will just duplicate the lower frequencies from the speakers and I would like the proper function with the highs and mids on the KEFs and the sub  handling only the lower bass. Any solution greatly appreciated. 

128x128riovinil
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What you need to do this the right way is two subs and a MINI DSP 2x4 total control over the bass and main speakers . 
Would as LS-50 wireless plus a HSU sub (10 inch) be good in a family room with a cathedral ceiling?
Within the limits of the LS-50 it works fine. I ran two Hsu 10 inchers but one is almost as good. 
yes.  no processing or crossovers needed- just a sub with the right connections and adjustments.  KEF LS50- perfectly flat response through the bass region-

http://forums.stevehoffman.tv/threads/how-to-perfect-subwoofer-integration.490198/