Audio Physic Virgo loudspeaker Measurements part 3
Fig.6 Audio Physic Virgo, spatially averaged 1/3-octave response in JA's listening room.
In the time domain, the step response (fig.7) reveals the upper-frequency drive-units to be connected with the same positive-going polarity. The woofers, however, are connected with inverted polarity. The associated cumulative spectral-decay, or waterfall, plot (fig.8) is superbly clean throughout the upper midrange and treble. There's your freedom from treble grain!
Fig.7 Audio Physic Virgo, step response on tweeter axis at 50" (5ms time window, 30kHz bandwidth).
Fig.8 Audio Physic Virgo, cumulative spectral-decay plot at 50" (0.15ms risetime).
I agree with MF: this a superbly engineered loudspeaker that happens also to sound quite wonderfully musical!—John Atkinson