I came across an interesting finding the other day when tweaking my subs. An audible suck out at around 50hz showed up in measurements, so I started tweaking the distance while measuring the spl at 50hz to see if that was the problem. Audyssey set the distance at 7.7', actual distance is 5.7', the distance I settled on the finally got rid of the null was 5' exactly. The crossover point (80hz) remained unaffected by the change.
Onto my question...
I've heard of having to set the distance further in order to align them properly, but shorter defies all logic to me. Any clue why that might be?
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