Bookshelf Speaker Reviews

L/R Sensitivity: 82 dB from 500 Hz to 2 kHz

Center Sensitivity: 85.5 dB from 500 Hz to 2 kHz

Surround Sensitivity: 84 dB from 500 Hz to 2 kHz

This graph shows the quasi-anechoic (employing close-miking of all woofers) frequency response of the Mini T L/R (purple trace), Mini T Sub subwoofer (blue trace), AC1 Mini center channel (green trace), and Mini A surround (red trace). The Mini T and AC1 Mini were measured with grilles. All passive loudspeakers were measured at a distance of 1 meter with a 2.83-volt input and scaled for display purposes.

The Mini T’s listening-window response (a five-point average of axial and +/–15-degree horizontal and vertical responses) measures +2.26/–4.37 decibels from 200 hertz to 10 kilohertz. The –3dB point is at 39 Hz, and the –6dB point is at 34 Hz. Impedance reaches a minimum of 4.65 ohms at 38 Hz and a phase angle of +31.94 degrees at 52 Hz.

The AC1 Mini’s listening-window response measures +2.14/–1.09 dB from 200 Hz to 10 kHz. An average of axial and +/–15-degree horizontal responses measures +2.06/–1.10 dB from 200 Hz to 10 kHz. The –3dB point is at 53 Hz, and the –6dB point is at 44 Hz. Impedance reaches a minimum of 4.22 ohms at 1.5 kHz and a phase angle of +46.51 degrees at 2.0 kHz.

The Mini A’s listening-window response measures +2.26/–5.56 dB from 200 Hz to 10 kHz. The –3dB point is at 68 Hz, and the –6dB point is at 55 Hz. Impedance reaches a minimum of 3.31 ohms at 992 Hz and a phase angle of –47.12 degrees at 111 Hz.

The Mini T Sub’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 125 Hz with the Crossover control set to maximum.—MJP