Great review of [Alta Audio’s] Alec speaker—you captured its strengths and weaknesses. The midbass dip, to me, is a result of the dip in the frequency-response curve shown in the graph you provided. Please keep up the great reviews and the lab testing that helps to explain a product’s performance.
I also want to mention that your article on Stereophile and D’Agostino was excellent! Too many reviewers just provide subjective assessments without doing the lab work. As consumers we want products that also test decently (or outstandingly); lab measurements can help point out problems, which may, at times, be audible and may impact the product’s functioning and longevity.
I own Harbeth Audio M30.2 XD speakers and value their flat frequency response—no deep bass, though. I’m using the Boulder Amplifiers 866 integrated amplifier, a Bluesound streamer, and a Shunyata Hydra Delta power conditioner. Your reviews and comments about Boulder products made me confident about my purchase.
All the best for 2022!