Tuner I've never seen any discussion about crown versus no crown on any piano maker's website. It's usually just taken as a given that the soundboard has crown and there is sometimes a discussion of the particular design of the soundboard. Piano makers don't say "Our pianos have crown" because it's assumed they do. I don't use AI but when I Googled "Bechstein Academy series no crown" I didn't see any relevant articles. Can you post a link to a few of these articles?
Here is the link to the 2024 piano buyer article about the academy series. They only Mention that the soundboard is non-tapered and it's hard for me to imagine they would leave out it has no crown if that was the case.
"The less-expensive, more traditional, Academy-series grands have an untapered soundboard, solid beech bridge with beech cap, maple hammer shanks, expansion-type keybed, and hammers with mahogany moldings and AAA felt. The same quality wood and strings are used in both. The rim parts are joined, and the soundboard and ribs installed, in a more efficient, less time-consuming manner than with the higher-priced models. The keys of the higher-priced line still use leather key bushings, whereas the A-series keys use the more conventional cloth bushings. Bone keytops are an option on the regular models, and both series feature genuine ebony sharps.
βThe cabinetry of the C. Bechstein Concert and Residence models is much sleeker and more sophisticated than the plainer Academy series, though both cabinets are finished to the same standard."