I have spent time with 40.2 AE and the 40.3XD.
It’s as though the .1 to the .2 has taken a small step again. XD has a tad more detail and the bass seems a tad tighter. It’s as though the tweeter is playing a bit further down. It’s very subtle change but it’s noticeable. AE is just a bit warmer ( ever so slightly). I would say the upper midrange had a tad more detail ( touch more dynamic). The XD is appropriate description.
Both are just fantastic. If your room presents a small degree of rumble good chance XD may solve that. Again subtle but noticeable. Not a review expert but I’m a Harbeth fan. Trying to help out is all. I own Wilson and Rockports and would never be without 40.2AE or 40.3XD. I won’t disclose which one I kept. I will say that either one is fine for me.
It’s as though the .1 to the .2 has taken a small step again. XD has a tad more detail and the bass seems a tad tighter. It’s as though the tweeter is playing a bit further down. It’s very subtle change but it’s noticeable. AE is just a bit warmer ( ever so slightly). I would say the upper midrange had a tad more detail ( touch more dynamic). The XD is appropriate description.
Both are just fantastic. If your room presents a small degree of rumble good chance XD may solve that. Again subtle but noticeable. Not a review expert but I’m a Harbeth fan. Trying to help out is all. I own Wilson and Rockports and would never be without 40.2AE or 40.3XD. I won’t disclose which one I kept. I will say that either one is fine for me.