Had to look it up. The N3 has the same drivers as the M3. The N2 has the same tweeters but only a single woofer which they up sized to the M3’s 6.5” woofer. So the N2 is a bit different… but I’d bet the volume of space plays a big role. Unfortunately Axiom doesn’t quote the frequency response on the N2.

The N3 is 60 to 20kHz +/- 3db. M3 65-20k +/- 3db. Be nice if Axiom published a freq response graph of the N3 so we can compare them a bit closer. I think/perceive my early version has a larger bass bump then the M3. From what others tell me they might have toned it down a bit over time. This bump works better for me on the deck then indoors where I find it a bit boomy (unlike the M3).

The M2 is 75-20k +/-3db but we are left in the dark on the N2.

I think for now I will stick with my assumption that The intent of the naming is to parallel each other. I’ll also put forth that the N2 as a stand alone device needed some extension on the low end over the M2 to be viable … so, it isn’t a perfect correlation.