I use an "Auratone" type speaker as well.
The "Control Room" outputs of my DAW feed into a stereo bus on my analogue mixer (output to my main monitors), with a mono send to my "Auratone".
In an ideal scenario, before I start panning anything (or using stereo at all), I try to achieve a static fader mix using EQ and Compression - in mono.
This, I constantly check through my mono-monitor.
Having a single driver, like an Auratone, also helps (Focusing on Midrange, etc.).
Only after this, do I look/listen to /work on the stereo field.
Just my tuppenceworth.