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<blockquote data-quote="Jack Arnott" data-source="post: 57021" data-attributes="member: 304">Re: High Frequency Compression Driver EvaluationEither I am misunderstanding you, or the B&amp;C person was wrong. The idea is to have as phase cohesive signal at the exit of the driver. The BMS has an advantage over a traditional driver in that it has less depth to the diaphragm. That said, it does not give the BMS any advantage in the way the sound exits the driver. By definition, if the sound disperses, it has to be in an arc. You can&#039;t have a flat wave front, and dispersion, the two are mutually exclusive.&nbsp; If the B&amp;C has a flat wave front, then the coverage is 1&quot; round. No matter which driver is bolted to the horn, if it has 90degrees of coverage, the arc is going to be the same. If you take a 20&#039; piece of string, and fix it at the mouth of the driver, and then run it around the coverage, it is going to trace out a dome, not a plane.</blockquote>

[QUOTE="Jack Arnott, post: 57021, member: 304"] Re: High Frequency Compression Driver Evaluation Either I am misunderstanding you, or the B&C person was wrong. The idea is to have as phase cohesive signal at the exit of the driver. The BMS has an advantage over a traditional driver in that it has less depth to the diaphragm. That said, it does not give the BMS any advantage in the way the sound exits the driver. By definition, if the sound disperses, it has to be in an arc. You can't have a flat wave front, and dispersion, the two are mutually exclusive. If the B&C has a flat wave front, then the coverage is 1" round. No matter which driver is bolted to the horn, if it has 90degrees of coverage, the arc is going to be the same. If you take a 20' piece of string, and fix it at the mouth of the driver, and then run it around the coverage, it is going to trace out a dome, not a plane. [/QUOTE]

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