Bookshelf Speaker Reviews

Satellite Sensitivity: 87 dB from 500 Hz to 2 kHz

This graph shows the quasi-anechoic (employing close-miking of all woofers) frequency response of the B652-AIR satellite (purple trace) and SUB-1000 subwoofer (blue trace). The passive loudspeaker was measured with grille at a distance of 1 meter with a 2.83-volt input.

The B652-AIR’s listening-window response (a five-point average of axial and +/–15-degree horizontal and vertical responses) measures +1.78/–3.34 decibels from 200 hertz to 10 kilohertz. An average of axial and +/–15-degree horizontal responses measures +2.68/–3.04 dB from 200 Hz to 10 kHz. The –3dB point is at 91 Hz, and the –6dB point is at 77 Hz. Impedance reaches a minimum of 5.35 ohms at 200 Hz and a phase angle of –27.83 degrees at 114 Hz.

The SUB-1000’s close-miked response, normalized to the level at 80 Hz, indicates that the lower –3dB point is at 38 Hz and the –6dB point is at 33 Hz. The upper –3dB point is at 108 Hz with the Crossover control set to maximum.—MJP