Thiel CS3.7 Speaker System HT Labs Measures
L/R Sensitivity: 90 dB from 500 Hz to 2 kHz
Center Sensitivity: 89 dB from 500 Hz to 2 kHz
This graph shows the quasi-anechoic (employing close-miking of all woofers) frequency response of the CS3.7 L/R (purple trace), SCS4 center channel (green trace), and SS2 subwoofer (blue 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. Please note that the manufacturer specifies a vertical axis for the CS3.7 of 36 inches above the base, not the tweeter axis.
The CS3.7’s listening-window response (a five-point average of axial and +/–15-degree horizontal and vertical responses) measures +0.98/–1.24 decibels from 200 hertz to 10 kilohertz. The –3-dB point is at 37 Hz, and the –6-dB point is at 32 Hz. Impedance reaches a minimum of 3.18 ohms at 123 Hz and a phase angle of –54.54 degrees at 58 Hz.
The SCS4’s listening-window response measures +0.64/–7.83 dB from 200 Hz to 10 kHz. An average of axial and +/–15-degree horizontal responses measures +0.78/–7.98 dB from 200 Hz to 10 kHz. The –3-dB point is at 51 Hz, and the –6-dB point is at 45 Hz. Impedance reaches a minimum of 3.96 ohms at 235 Hz and a phase angle of –36.23 degrees at 98 Hz.
The SS2’s close-miked response, normalized to the level at 80 Hz, indicates that the lower –3-dB point is at 33 Hz and the –6-dB point is at 20 Hz. The upper –3-dB point is at 255 Hz using the LFE input.—MJP