Loudspeaker undercurrents
I must admit that when I first read that exotic waveforms that increased the current demands of speakers by several times could be thought up, I was a bit sceptical. Well, actually, I was very sceptical. However, I was wrong to be so untrusting. Simulating a very simple analog of a loudspeaker showed that transient currents of considerable size can be made to flow if careful adjustments are made to the stimulus waveform.
However, the implications of this for practical amplifier design are much less clear. The square-edged waveforms required to induce current-enhancement do not resemble speech or music at all, and in the intervening years since the article was published it has gradually become clearer that they do not ...
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