Horn/line array combos are what JBL uses in their professional line. The VTX V25 units are what I am thinking of. They stack into a line source but would be comically large for home use and ugly. But honestly they are probably pretty high fidelity based on the drivers which are very close to what is used in the M2 and 4367.
Anyway 90% kidding but the concept of horn loaded line source is interesting. For one seat a simple horn is good enough and line sources get pretty expensive or end up using cheaper drivers. Personally I own horns but would love to try/own a pair of line sources someday.
https://jblpro.com/product_families/vtx-v-series
