Well today i made my 3e version, even wider then the 2e. since i wanted to get resonance lower, to be able to play lower. i also compared the low end to the only commercial panel i have the LRS planar magnetic speaker. (notch for the resonance on V3 panel is on else we cant compare them )

I play 2 tunes , different then usual since its more about bass for this tests anyways
No EQ used on the recording and only notches on the dsp , resonance and room mode. else we would drown in waaay to much bass. its recorded in binaural so,, use headphones if you can