Which JBL horn is better for hifi use: 2360A or 2365A? I will use JBL 2445J on them and later maybe BMS coax. The listening distance will be around 10 ft. and the room is 16.5 ft wide.
“Better” is a subjective term. The 2360’s 90x40 pattern would be more typical of the preference for most, especially if placed wide in a 16.5” wide room at 10’ listening distance. Toed in, they would cover a pretty wide couch evenly, other than the top octave.
The 2365’s 60x40 might be a tad narrow at that distance, but would reduce wall reflections. Within it’s 60 degree “window” it has less variation than the 90 degree 2360.
It’s pattern does not narrow as much in the top octave, which is a good thing considering you are not planning to use separate tweeter horns, and upgrade to a coax driver.
If you prefer “spacious” sound, go 2360, “headphone accuracy”, 2365.
Art
The 2365’s 60x40 might be a tad narrow at that distance, but would reduce wall reflections. Within it’s 60 degree “window” it has less variation than the 90 degree 2360.
It’s pattern does not narrow as much in the top octave, which is a good thing considering you are not planning to use separate tweeter horns, and upgrade to a coax driver.
If you prefer “spacious” sound, go 2360, “headphone accuracy”, 2365.
Art
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Assuming you're using these horns as the high end with a 15 or 12" low driver the coverage pattern will be a much better match with the 90 degree horn. The 60 degree horn will make for a very small listening sweet spot in the room you've described.