Science: Faithful Reproducer

Electronic engineers loathe mechanical moving parts. One that has always bothered them is the light, vibrating diaphragm in the throat of a loudspeaker. Compared to the almost weightless electrons that flash through radio tubes, the loudspeaker membranes are sluggish. Their slow and clumsy response distorts the delicate signals brought to them by the electrons; the ordinary mechanical loudspeakers cannot reproduce the full range of music or the human voice. The ideal loudspeaker, the engineers have long believed, should have a diaphragm almost as weightless as the electrons themselves.

In the current issue of Radio-Electronics is a description of a French loud speaker...

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