Tower Speaker Reviews

L/R Sensitivity: 89 dB from 500 Hz to 2 kHz
Center Sensitivity: 89.5 dB from 500 Hz to 2 kHz
Surround Sensitivity: 86 dB from 500 Hz to 2 kHz

This graph shows the quasi-anechoic (employing close-miking of all woofers) frequency response of the S8 L/R (purple trace), C5 center channel (green trace), and ADP3 surround (red trace). All loudspeakers were measured with grilles at a distance of 1 meter with a 2.83-volt input and scaled for display purposes.

The S8’s listening-window response (a five-point average of axial and +/–15-degree horizontal and vertical responses) measures +0.97/–1.90 decibels from 200 hertz to 10 kilohertz. The –3-dB point is at 51 Hz, and the –6-dB point is at 42 Hz. Impedance reaches a minimum of 4.21 ohms at 98 Hz and a phase angle of –83.18 degrees at 57 Hz.

The C5’s listening-window response measures +3.47/–2.46 dB from 200 Hz to 10 kHz. An average of axial and +/–15-degree horizontal responses measures +3.50/–3.17 dB from 200 Hz to 10 kHz. The –3-dB point is at 66 Hz, and the –6-dB point is at 56 Hz. Impedance reaches a minimum of 4.55 ohms at 992 Hz and a phase angle of –55.48 degrees at 84 Hz.

The ADP3’s three-face averaged response measures +0.19/–3.39 dB from 200 Hz to 10 kHz. The –3dB point is at 83 Hz, and the –6dB point is at 75 Hz. Impedance reaches a minimum of 3.87 ohms at 17.4 kHz and a phase angle of –69.92 degrees at 93 Hz.—MJP