What would be the difference, sound wise? What does that 3cm give you?
Thanks
by the way... this is in reference to the custom schoep bars at cascademedia.net
Direct A/B tests will present several sonic differences between the two configurations, as applied to both hypers and cards. Without having my field notes in front of me, this is what I remember from the top of my head:
1. mk41s run on both 20cm(A) & 17cm(B) on an ams-22 mount (meaning that both pairs of mk41s are only 20mm(approx) apart on the vertical plane. The 41s(A) presented to be more muffled with mids buried moreso than the 41s(B), highs were less brilliant (but not too brittle) than the 41s(B), and the low end became sloppier than the 41s(B). Overall, the sound of the 41s(B) was more accurate, less reverberant, and more pleasing to listen to with cans or playback (in this case two HR824s per side(L/R) with one (per side) rolled off to the "B" setting.) The sloppiness created by spreading the mk41s apart goes against known physics of frequency dependence where the wide will create a deeper tone. Widening the hypers created a sloppier tone, not necessarily deeper and warm - I attributed this to be because of the polar pattern of the supers mk41s.
2. In the case of the mk4s at 20cm(A) & 17cm(B) on the same ams-22 mount...the cards did not demonstrate that much of a difference except for the low end which because less prominent in the recording. The high ends, what was analyzed to be beyond 10Khz became a little too brittle thatn the cards positioned at 20cm.
These tests were run in a theater with a vdosc array and also in a baffled basement studio with microphones aimed towards aformentioned playback system at 20 & 30ft.
Again, this is off the top of my head.
Edit:
A note. All monitoring is done at a reference level only using calibrated monitors (also sent in for re-calibration every 12months - on average depending on usage and how hot the S.E. summers get
) What happens between my reference monitoring and your playback system is your own ball of wax...