Definitive Technology StudioMonitor 55 Speaker System HT Labs Measures

HT Labs Measures

L/R Sensitivity: 88.5 dB from 500 Hz to 2 kHz

Center Sensitivity: 92 dB from 500 Hz to 2 kHz

Surround Sensitivity: 87 dB from 500 Hz to 2 kHz

This graph shows the quasi-anechoic (employing close-miking of all woofers) frequency response of the SM55 L/R (purple trace), SC6000 subwoofer (blue trace), CS-8040HD center channel (green trace), and SM45 surround (red trace). All passive loudspeakers were measured with grills at a distance of 1 meter with a 2.83-volt input and scaled for display purposes.

The SM55’s listening-window response (a five-point average of axial and +/–15-degree horizontal and vertical responses) measures +1.66/–3.07 decibels from 200 hertz to 10 kilohertz. The –3dB point is at 44 Hz, and the –6dB point is at 40 Hz. Impedance reaches a minimum of 4.67 ohms at 207 Hz and a phase angle of –38.83 degrees at 136 Hz.

The CS-8040HD’s listening-window response measures +1.83/–3.83 dB from 200 Hz to 10 kHz. An average of axial and +/–15-degree horizontal responses measures +2.44/–4.24 dB from 200 Hz to 10 kHz. The –3dB point is at 82 Hz, and the –6dB point is at 40 Hz. Impedance reaches a minimum of 4.41 ohms at 273 Hz and a phase angle of –50.36 degrees at 132 Hz.

The SM45’s listening-window response measures +2.19/–2.87 dB from 200 Hz to 10 kHz. The –3dB point is at 61 Hz, and the –6dB point is at 44 Hz. Impedance reaches a minimum of 4.46 ohms at 193 Hz and a phase angle of –39.33 degrees at 111 Hz.

The SC6000’s close-miked response, normalized to the level at 80 Hz, indicates that the lower –3dB point is at 28 Hz and the –6dB point is at 26 Hz. The upper –3dB point is at 96 Hz using the LFE input.—MJP

COMPANY INFO
Definitive Technology
(800) 228-7148
ARTICLE CONTENTS
Share | |

X
Enter your Sound & Vision username.
Enter the password that accompanies your username.
Loading