Tower Speaker Reviews

L/R Sensitivity: 86.5 dB from 500 Hz to 2 kHz

Center Sensitivity: 87 dB from 500 Hz to 2 kHz

Surround Sensitivity: 83.5 dB from 500 Hz to 2 kHz

This graph shows the quasi-anechoic (employing close-miking of all woofers) frequency response of the XL7F L/R (purple trace), XL7C center channel (green trace), and XL7S 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 XL7F’s listening-window response (a five-point average of axial and +/–15-degree horizontal and vertical responses) measures +2.76/–5.18 decibels from 200 hertz to 10 kilohertz. The –3dB point is at 48 Hz, and the –6dB point is at 40 Hz. Impedance reaches a minimum of 4.50 ohms at 135 Hz and a phase angle of +42.00 degrees at 700 Hz.

The XL7C’s listening-window response measures +2.66/–1.72 dB from 200 Hz to 10 kHz. An average of axial and +/–15-degree horizontal responses measures +2.88/–3.70 dB from 200 Hz to 10 kHz. The –3dB point is at 73 Hz, and the –6dB point is at 58 Hz. Impedance reaches a minimum of 8.52 ohms at 186 Hz and a phase angle of –41.95 degrees at 111 Hz.

The XL7S’s listening-window response (a five-point average of axial and +/–15-degree horizontal and vertical responses) measures +3.11/–2.16 decibels from 200 hertz to 10 kilohertz. The –3dB point is at 58 Hz, and the –6dB point is at 49 Hz. Impedance reaches a minimum of 8.35 ohms at 174 Hz and a phase angle of –34.84 degrees at 106 Hz. —MJP