tom:

I'm not sure of anything yet, ha!.

I'm somewhat leery that the mild M3 bass bump at 100Hz (that sounds so good without a sub) combined with the reinforcement of the alcove plus the low end contribution from EP-400 might be too much. That perhaps could cause some bloated bass in that region.

The problem is, I cannot correct for that as my Tube Amp has no tone adjustments - only volume. That is why I'm leaning towards the M2s.

TAM