Rhythmic F12SE setup using line in

I recently purchased a preamp which has no bass management. I had been using my Marantz 7015 LFE and Audyssey MultEQ-X with a +3db/-3db tilt curve & crossover at 80Hz with my KEF R11’s & Rythmic F12SE. The bass was clear, concise & crisp. 
 

I have followed the Rythmic instructions on line setup and cannot quite get the same results. Bass is less crisp, almost muddy.
 

I currently have the crossover at 50Hz, gain at 0, bandwidth & freq middle, delay/phase 10:00 (rhythmic recommendation for ported mains), volume about 1:00, nonLFE low pass 50Hz/24, rumble off, extension filter 14 hi. 
 

Any recommendations? Thanks