Originally Posted by
Mr. Widget
The point of the measurements is not to show an idealized quasi anechoic measurement of the speakers. Simply raising the Meyer Acheron Designer speaker off the floor to about 5' (in this 12' high room) would render a more accurate measure of the speaker, but that wasn't the point. I was showing how they measure at the listening position in my room. Of course there are floor and room interactions in both cases and even some degree of interaction between the two speakers being right next to each other, but this was the most convenient way to audition them.
What I am saying is that the response in these plots below about 700Hz is showing these interactions and yes they will be different due the relative distances between the LF drivers and the floor and other boundaries. What I wanted to show was the differences between a well behaved phase corrected speaker and a multiway speaker with rather severe time incoherence.
Since the Meyer Acheron Designer speakers have integrated amplifiers and DSP, they are factory corrected to a response of 38Hz-17KHz +/- 4dB. (It appears that even in my far from idealized real world measurements these specs hold.) But more importantly, these speakers have a +/- 30° phase response between 230Hz and 17KHz. That would not be possible without time/phase correction in the DSP.
My over arching point is that while my measurements appear to confirm that a time/phase corrected speaker may measure better, at least to this listener, the speaker measuring more poorly sounds better. FWIW: Both systems do not suck... If I had to live with either system, I could be quite happy.
Widget