Dynaudio Evidence Master loudspeaker Measurements part 3

In the time domain, the Evidence's step response (fig.7) indicates that the tweeters and woofers are connected in positive acoustic polarity, while the midrange units are connected in inverted polarity. This means that the step response of each unit hands over in a linear manner to that of the next lower in frequency, which correlates with the smooth, flat on-axis response. As expected from LG's description of the speaker's lack of grain, the cumulative spectral-decay plot (fig.8) is clean and free from resonant hash. Logistical problems meant that it was not possible to measure the vibrational behavior of the subenclosures, but these seemed suitably solid to the knuckle-rap test.

Fig.7 Dynaudio Evidence, on-axis step response at 50" (5ms time window, 30kHz bandwidth).

Fig.8 Dynaudio Evidence, cumulative spectral-decay plot at 50" (0.15ms risetime).

A question has been raised in recent issues of Stereophile: Why do so many expensive speakers seem to diverge in quality and measured performance rather than, as you might expect, converge? But Dynaudio's Evidence offers superb measured performance to accompany Larry Greenhill's praise for its sound. Yes, it is astonishingly expensive, but there is no doubt that it represents a serious attempt on the state of the loudspeaker art.—John Atkinson

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