Wow... it all makes sense, but I never gave it a second thought... I just assumed that they were in phase... we've all heard the obvious phase issues with mains, but it never occurred to me that the subs and mains could be off. This is why I have only been concerned with polarity and not the phase relationship to mains.
If your mains and subs are very close together, the area of good phase match will be much larger, and it won't matter much where you measure, pick good seats.Mac
. Our subs have always been very close to the mains. ... it all "sounds" in line throughout the venue.
No, they will still need to be phase aligned, but the alignment will work over most of the coverage area. The phase of the signal coming out of a speaker is affected by crossover design, box design, driver selection, and electronic treatment. The idea is to use the electronic treatment to correct the errors induced by all the other influences.Mac
Measurements can give you answers, but you have to know what questions you are asking.The best measurement system can only suggest the results of choices you have made. Experience tells you what those choices might be.
So... Maybe my last question, when working with a system that is L/R with a mono center ground stack sub cluster, would you run pink through the whole system or just left and the subs then right and the subs. In my head, if the subs are equidistant from the left and right, it would seem to be that if the relationship between left and sub is correct the relationship between right and sub is correct?I am also assuming that this is a proper l/r system where each side fully covers the audience. Which maybe leads to a second question - in a stereo system, there is inherently a lot of phase interaction between sides due to spacing - yes? Do you try to fix that or just accept that it is a disadvantage of stereo versus a mono center cluster....I'll add that this is mostly an academic interest for me. I know enough to know I don't know enough to do this, and with our installs especially, it's better to let people who are good at this due system tuning. That said, playing around with our portable B right better understand the concepts is something I might do...
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