B&W Compact Domestic Monitor 1 loudspeaker Measurements part 2
Fig.7 B&W CDM 1, step response on tweeter axis at 50" (5ms time window, 30kHz bandwidth).
Fig.8 B&W CDM 1, cumulative spectral-decay plot at 50" (0.15ms risetime).
Finally, a waterfall plot (fig.9) calculated from the output of a PVDF accelerometer strip fastened to the center of the cabinet sidewall revealed only a low-level panel resonance at 390Hz. A couple of lower-frequency modes could be found on the cabinet rear and top panels but were still low in level, indicating that the B&W's cabinet is well-designed and -constructed.
Fig.9 B&W CDM 1, cumulative spectral-decay plot of accelerometer output fastened to side of enclosure (MLS driving voltage to speaker, 7.55V; measurement bandwidth, 2kHz).
Overall, this is an excellent set of measurements, correlating well with the B&W's excellent perceived sound quality.—John Atkinson