值得一讀，TAS 2013喇叭指南（ http://www.miaofoundry.url.tw/phpbb/viewtopic.php?f=4&t=3528 ）中有部分摘錄。
例如這段談絲帶喇叭的擴散性
a ribbon’s radiation pattern changes dramatically with frequency. At low frequencies, when the ribbon’s length is short compared to the wavelength of sound, the ribbon will act as a point source and produce sound in a sphere around the ribbon—just like a point-source woofer. As the frequency increases and the wavelength of sound approaches the ribbon’s dimensions, the radiation pattern narrows until it looks more like a cylinder around the ribbon than a sphere. At very high frequencies, the ribbon radiates horizontally but not vertically. This can be an advantage in the listening room: the listener hears more direct sound from the loudspeaker and less reflection from the sidewalls and ceiling.這段提到絲帶與靜電喇叭可以不用分頻電路
One great benefit of full-range ribbons and full-range electrostatics is the absence of a crossover; the diaphragm is driven by the entire audio signal.
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