Wilson Alexia 2 lacking some bass

I’ve got almost the same setup with Alexia 2 and Rossini Apex but with Boulder preamp and amp. The bass is terrific. In fact, I replaced B&W 802d3 which were anemic. The Alexia has amazing bass. 

Great system.  Maybe the Alexa’s are to far from the front wall?.

Just a thought.

@greenspyder718, does the minor low-end lack you describe show up throughout the room, or only in the listening position? 

Is your 20 x 15 foot room open into any other rooms?

Can you describe approximately where the speakers are relative to the nearby walls? 

Thanks!

I owned Alexia2 for almost one year and just traded in for AlexiaV this week. In my experience Wilsons are never lack of bass response (not sure you meant 40hz deep bass or 80-100hz mid bass, and not sure you meant lack of bass volume or dynamics ?)  also how large is your listening area that the amp+speakers can fill with enough power ? 

I would try to move the speakers 1/4inch at a time, towards the front wall and see if it helps. Another thing I tried is to take away the grilles of bass drivers and it should give you 5% more dynamics or punch feel. 
 

I am not familiar with the preamp you are using , but another way to try is to adjust the gain on your preamp and see if that helps. 

I would add 2 Rel subwoofers like the S 510 or the S 812. I just added 2x S 500 with my Shindo Masseto and Montille amp and Fleetwood Deville SQ. Wish did it before, it is really a match made in heaven. Perfect bass , better coherence and live sounding.You won’t regret it, believe me, will take your system to another level.