![]() The mass of the air in the bell of the horn is negligible and therefore the throat reactance is negligible. So what? It does not affect the throat reactance as in giver case we deal with HF horns. The conical horn has more rapid increase of cross-sectional area at the beginning. This thus reduces the sound pressure in the horn as well as distortions due to the compressibility of air. Conical horns have some Homogeneous radiation patter advantages in the lower frequencies but not at the frequencies over 1000Hz, or the frequencies where Bill market his horns.Īnother advantage is that the cross-sectional area in the vicinity of the horn throat increases more rapidly than for exponential horns. Any horn, no mater what profile it is has very screwed radiation patter over a wide frequency range, not to mention that no one use horns over the “wide frequency range”: 3-4 octaves and it’s it. “Homogeneous radiation characteristic over a wide frequency range?” Yes and no. “The precisely defined radiation characteristic?” Does it means that any other profiles of the horns have unknown or unpredictable radiation characteristic? I do not think so. Ok, let to leave the cheerleader's megaphone alone. Because the wavefront has a smooth passage, it has perfect phase. The "horn sound" is nil with a conical horn. There is no disruption to the wavefront as it moves out towards the horn mouth. Conical horns, manifest a homogeneous radiation characteristic over a wide frequency range. Compared with all other horn flares, conical horns have a precisely defined radiation characteristic. The cross-section increases linearly, like a cheerleader's megaphone. The conical horn is the simplest horn shape. (Here and below are quotes from the Bill Woods’ site: ) I do not argue that conical horns are inferior or superior then other shapes but look what Bill Woods proposes: I like the horns but what I disagree is the rational that Bill uses pushing the conical horn agenda. They are 17” aluminum conical horn with a cutoff frequency of 700Hz. Some of his old large horns are interesting as so on… however, what make me to wonder is the horns that Bill Woods makes. I do not know the guy but the site looks attractive. Steve Schell pointed to Bill Woods’ site aka RCAfan. Post mapped to one branch of Knowledge Tree Home » Horn-Loaded Speakers » Some conical horns anti-propaganda (2 posts, 1 page) ![]()
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December 2022
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