Bookshelf Speaker Reviews

This graph shows the quasi-anechoic (employing close-miking of all woofers) frequency response of the audioengine HD3 Speaker System (purple trace). The left channel was measured with grille at a distance of 1 meter.

The HD3 Speaker System’s listening-window response (a five-point average of axial and +/–15-degree horizontal and vertical responses) measures + 2.64 /– 3.25 decibels from 200 hertz to 10 kilohertz. An average of axial and +/–15-degree horizontal responses measures +2.62/–3.53 dB from 200 Hz to 10 kHz. The –3dB point is at 92 Hz, and the –6dB point is at 72 Hz.—MJP