Think Outside Boomtube H2O1 HT Labs Measures
This graph shows the quasi-anechoic (employing close-miking of all woofers) frequency response of the satellites (purple trace) and subwoofer (blue trace). The loudspeaker was measured at a distance of 1 meter.
The satellites's listening-window response (a five-point average of axial and +/-15-degree horizontal and vertical responses) measures +6.92/-2.45 decibels from 400 hertz to 10 kilohertz. The -3dB point is at 343 Hz, and the -6dB point is at 243 Hz.
The subwoofer's close-miked response, normalized to the level at 120 Hz, indicates that the lower -3dB point is at 92 Hz and the -6dB point is at 80 Hz. The upper -3dB point is at 193 Hz. —MJP