Magnepan 1.7 and Klipsch R-120SW


Does anyone have a successful experience adding a Klipsch R-120SW to a set of Magnepan 1.7 speakers?
I have owned a set of Magnepans for quite some time but the bass performance has been way below my expectations. 
I decided to add a subwoofer for a better listening experience. If anyone has been successful with this combination or any other , would you please share proper settings, crossover, phase and gain?
thank you
I power my magnepans with Emotiva XPA 2 and use XPS1 as a preamp
Thank you
max23nyc
"If anyone has been successful with this combination or any other , would you please share proper settings, crossover, phase and gain?" No one can possibly(correctly) do any of that, without being IN the room, with YOUR system.