Quick question that I can't seem to find a good answer to.
When talking about center to center spacing it appears that the measurement is usually done from the center of the woofer to the center of the mouth of the horn.
Does that mean that this is where the acoustic center is supposed to have shifted towards? Does the same count for midrange drivers?
In this case I'm wondering whether this spacing trick would work the same if the midrange woofers were to be moved back about 30cm (1ft) in a simple straight horn, maintaining the vertical spacing when measured from both horn mouths.
Of course if the answer to this is yes, the question immediately becomes whether more vertical spacing can be permitted if the vertical directivity of the horn is manipulated. Are we simply looking at a good match between both vertical and horizontal directivity here?
