I wonder if the v2 has less bass emphasis than the earlier legendary SE and previous models of the M3...?

The newer v2 graphs shows the bass at about the same level or just a bit below the upper mids, while the earlier NRC published graphs through SoundStage show the bass to be about 2db higher.

It could be that the overall response is flatter than the older M3s, but that the bass is a solid but silly 2 to 3 db less.

Maybe what the OP needs is a set of older M3TiSEs.

.....sorry....mine ain't for sale.