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Consumer Electronics by S. P. Bali

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COST AND EFFICIENCY

The general methods of providing stereo for different kinds of rooms are already considered, but another important aspect which needs mention is cost and quality. And this in turn is related to efficiency, especially when size is taken into consideration. Small speakers can be highly efficient, provided their frequency response isn't very low, since as small speakers become more effective at lower frequencies (bass) they lose efficiency.

Earlier books on this subject related quality and efficiency to magnet size—which is the most costly single part of a loudspeaker. However, with the newer ceramic magnets, this relationship is not quite so certain, because the magnet is no longer the vital cost element. And even if magnet ...

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