High-Performance Architectural Loudspeakers
planar technology
Line-Source
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The cone-type class of loudspeaker produces a characteristic radiation pattern that is best described as “point-source,” with output level diminishing rapidly as the distance increases between the listener and speaker. The classic expression of this phenomenon is that sound pressure level is inversely proportional to the square of the distance. The practical acoustical effect is that there is a 6 decibel (4-fold) drop in level with every doubling of distance. Line-source radiators like the BG's “Radia” series ribbon devices do not suffer the same physical and psychoacoustic limitations, as they are characterized by sound pressure levels that are linearly inversely proportional to the distance, resulting in a 3 decibel reduction in level with every doubling of distance rather than the 6 decibel drop with point-source radiators. more... |
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