Speaker center to center distance - Theory and Practice question.

[mtchyz250f]

From what I understand (which is almost nothing), center to center distance of speakers should be less than a 1/4 wave length at the crossover point. It seems that in many circumstances this is impossible because of the size of PA speakers and the frequencies they play. For example crossing a 15" woofer like the JBL E145 with anything above 400Hz would seem to violate this principle, but JBL does this with great success with the Everest!

So is this a principle in theory only? How does it play out in real life?

[Robh3606]

Just keep the spacing as close as you can. When you are dealing with 15" woofers 10 or 12" mids with horns up top things get big quickly. I would obviously be more conerned with a 10-12" midrange to horn spacing than the woofer to midrange. If you look at Drews Clues he recomended the closest spacing possible between the midrange and a horn in the larger systems.

http://www.audioheritage.org/html/perspectives/drews-clues/drews-clues.htm

Rob:)