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Originally Posted by Bill Fitzmaurice 
No, because of the presence of boundaries. I think the term 'acoustic center' has you a bit confused. What's pertinent in this case is the radiating plane, one that's, say, thirteen inches wide versus thirteen feet wide. One will react quite differently with respect to the radiation pattern than the other, and that matters more than the response curve in this scenario.

No, because of the presence of boundaries. I think the term 'acoustic center' has you a bit confused. What's pertinent in this case is the radiating plane, one that's, say, thirteen inches wide versus thirteen feet wide. One will react quite differently with respect to the radiation pattern than the other, and that matters more than the response curve in this scenario.
this and something you said a few posts back about tall stacks of subwoofer boxes
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i guess the lesson is that how the drivers are aligned may also make a difference for in-room FR.
e.g. 8 drives on the same plane would likely sound different than 4 DO boxes stacked in 2 levels.
I would not be surprised if there is measurable difference in frequency response even between single dual opposed and single dual font firing boxes, depending on position.











