Bookshelf Speaker Reviews

Satellite Sensitivity: 89 dB from 500 Hz to 2 kHz

Center Sensitivity: 92 dB from 500 Hz to 2 kHz

This graph shows the quasi-anechoic (employing close-miking of all woofers) frequency response of the ProMonitor 1000 satellite (purple trace), ProSub 1000 subwoofer (blue trace), and ProCenter 2000 center channel (green trace). All passive loudspeakers were measured with grilles at a distance of 1 meter with a 2.83-volt input and scaled for display purposes.

The ProMonitor 1000's listening-window response (a five-point average of axial and +/–15-degree horizontal and vertical responses) measures +1.07/–3.53 decibels from 200 hertz to 10 kilohertz. The –3-dB point is at 150 Hz, and the –6-dB point is at 45 Hz. Impedance reaches a minimum of 4.47 ohms at 302 Hz and a phase angle of –48.59 degrees at 134 Hz.

The ProCenter 2000's listening-window response measures +1.71/–2.50 dB from 200 Hz to 10 kHz. An average of axial and +/–15-degree horizontal responses measures +1.77/–3.27 dB from 200 Hz to 10 kHz. The –3-dB point is at 110 Hz, and the –6-dB point is at 50 Hz. Impedance reaches a minimum of 4.28 ohms at 270 Hz and a phase angle of –41.49 degrees at 154 Hz.

The ProSub 1000's close-miked response, normalized to the level at 80 Hz, indicates that the lower –3-dB point is at 39 Hz and the –6-dB point is at 34 Hz. The upper –3-dB point is at 120 Hz using the LFE input.—MJP