Bookshelf Speaker Reviews

Satellite Sensitivity: 86 dB from 500 Hz to 2 kHz

Center Sensitivity: 89.5 dB from 500 Hz to 2 kHz

This graph shows the quasi-anechoic (employing close-miking of all woofers) frequency response of the Prestige 15B satellites (purple trace), Seismic 110 subwoofer (blue trace), and Prestige 45C 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 Prestige 15B’s listening-window response (a five-point average of axial and +/–15-degree horizontal and vertical responses) measures +4.64/–1.19 decibels from 200 hertz to 10 kilohertz. The –3dB point is at 60 Hz, and the –6dB point is at 52 Hz. Impedance reaches a minimum of 4.55 ohms at 193 Hz and a phase angle of –49.38 degrees at 5.9 kHz.

The Prestige 45C’s listening-window response measures +2.68/–2.13 dB from 200 Hz to 10 kHz. An average of axial and +/–15-degree horizontal responses measures +2.82/–2.38 dB from 200 Hz to 10 kHz. The –3dB point is at 86 Hz, and the –6dB point is at 72 Hz. Impedance reaches a minimum of 4.17 ohms at 1.1 kHz and a phase angle of –56.89 degrees at 108 Hz.

The Seismic 110’s close-miked response, normalized to the level at 80 Hz, indicates that the lower –3dB point is at 18 Hz and the –6dB point is at 16 Hz. The upper –3dB point is at 181 Hz with the Cut-Off Frequency control set to maximum.—MJP