Mirage MRM-1 loudspeaker Measurements part 3
Fig.8 Mirage MRM-1, spatially averaged, 1/3-octave, free-field response in JA's listening room.
As expected from its crossover topology and flat baffle, the MRM-1's step response (fig.9) is perfectly conventional: both drivers are wired in positive acoustic polarity, and the tweeter's output leads the woofer's by a fraction of a millisecond. The speaker's cumulative spectral-decay plot (fig.10) is superbly clean through the upper midrange and treble, which presumably contributes to the lack of grain.---John Atkinson
Fig.9 Mirage MRM-1, on-axis step response at 50" (5ms time window, 30kHz bandwidth).
Fig.10 Mirage MRM-1, cumulative spectral-decay plot at 50" (0.15ms risetime).