Tower Speaker Reviews

L/R Sensitivity: 88 dB from 500 Hz to 2 kHz

Center Sensitivity: 88.5 dB from 500 Hz to 2 kHz

Surround Sensitivity: 83 dB from 500 Hz to 2 kHz

This graph shows the quasi-anechoic (employing close-miking of all woofers) frequency response of the GS 20 L/R (purple trace), GSW 12 subwoofer (blue trace), GS LCR center channel (green trace), and GS FX surround (red 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 GS 20's listening-window response (a five-point average of axial and +/–15-degree horizontal and vertical responses) measures +1.63/–1.86 decibels from 200 hertz to 10 kilohertz. The –3-dB point is at 47 Hz, and the –6-dB point is at 41 Hz. Impedance reaches a minimum of 5.29 ohms at 172 Hz and a phase angle of –41.44 degrees at 86 Hz.

The GS LCR's listening-window response measures +1.25/–3.39 dB from 200 Hz to 10 kHz. An average of axial and +/–15-degree horizontal responses measures +1.05/–4.52 dB from 200 Hz to 10 kHz. The –3-dB point is at 89 Hz, and the –6-dB point is at 70 Hz. Impedance reaches a minimum of 7.08 ohms at 193 Hz and a phase angle of –36.91 degrees at 96 Hz.

The GS FX's three-face averaged response measures +1.05/–5.61 dB from 200 Hz to 10 kHz. The –3-dB point is at 77 Hz, and the –6-dB point is at 64 Hz. Impedance reaches a minimum of 4.60 ohms at 463 Hz and a phase angle of –43.57 degrees at 84 Hz.

The GSW 12's close-miked response, normalized to the level at 80 Hz, indicates that the lower –3-dB point is at 61 Hz and the –6-dB point is at 50 Hz. The upper –3-dB point is at 156 Hz using the LFE input with the controls set to Flat.—MJP