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<blockquote data-quote="Caleb Dueck" data-source="post: 72216" data-attributes="member: 60">Re: Carrie Underwood Sub Woofer ArrayHaving an empty rear area is needed, yes, otherwise the reflections from that rear surface will arrive too soon in time - IE, before the array as a whole can cancel them out.&nbsp; I&#039;m assuming there is a minimum distance based on total array distance to get the time to line up right.However, not sure about side surfaces being bad.&nbsp; Imagine a tube of subs, where it was not only a pair of parallel subs firing in, but two parallel rows.&nbsp; One pair firing at each other top/bottom, the other pair at each other side/side.&nbsp; As long as the rear was to free space, it would essentially be a big bass cannon, would it not?&nbsp; If the space under the stage was rigid and had no air leaks, other than plenty of space out the rear - it should work fine.&nbsp; However, how many stages just happen to be constructed like this?&nbsp; <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f609.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=";)" title="Wink&nbsp; &nbsp; ;)"&nbsp; data-smilie="2"data-shortname=";)" /></blockquote>

[QUOTE="Caleb Dueck, post: 72216, member: 60"] Re: Carrie Underwood Sub Woofer Array Having an empty rear area is needed, yes, otherwise the reflections from that rear surface will arrive too soon in time - IE, before the array as a whole can cancel them out. I'm assuming there is a minimum distance based on total array distance to get the time to line up right. However, not sure about side surfaces being bad. Imagine a tube of subs, where it was not only a pair of parallel subs firing in, but two parallel rows. One pair firing at each other top/bottom, the other pair at each other side/side. As long as the rear was to free space, it would essentially be a big bass cannon, would it not? If the space under the stage was rigid and had no air leaks, other than plenty of space out the rear - it should work fine. However, how many stages just happen to be constructed like this? ;) [/QUOTE]

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