Bookshelf Speaker Reviews

Satellite Sensitivity: 84.5 dB from 500 Hz to 2 kHz

This graph shows the quasi-anechoic (employing close-miking of all woofers) frequency response of the Focus 110 satellite (purple trace) and SUB 250 subwoofer (blue trace). The passive loudspeaker was measured with grille at a distance of 1 meter with a 2.83-volt input.

The Focus 110's listening-window response (a five-point average of axial and +/–15-degree horizontal and vertical responses) measures +1.37/–4.15 decibels from 200 hertz to 10 kilohertz. An average of axial and +/–15-degree horizontal responses measures +2.02/–3.85 dB from 200 Hz to 10 kHz. The –3-dB point is at 52 Hz, and the –6-dB point is at 47 Hz. Impedance reaches a minimum of 4.33 ohms at 216 Hz and a phase angle of –34.92 degrees at 111 Hz.

The SUB 250's close-miked response, normalized to the level at 80 Hz, indicates that the lower –3-dB point is at 35 Hz and the –6-dB point is at 30 Hz. The upper –3-dB point is at 214 Hz with the Mode switch set to LFE.—MJP