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<blockquote data-quote="hispls" data-source="post: 8588132" data-attributes="member: 614752">To some degree I think you can predict your main peaks via measuring corner to corner front to back dividing that into the speed of sound then dividing by 1/4 and 1/2.&nbsp; Expect standing waves around those points, predicting nulls may be more difficult as would be predicting overall gains.&nbsp; &nbsp; It&#039;s really a matter of wavelength.&nbsp;&nbsp; Low frequencies have a very long wavelength and are subject to interference from their own reflections coming from all directions.&nbsp; Most of this interference will be constructive (make it louder).&nbsp; You can use generalizations to get a ballpark idea what to expect but beyond that you need to test and ideally own an RTA or SPL meter to really quantify and see what&#039;s happening.Then again, I could be wrong and with enough data perhaps you could get a lot more accurate predictions than I expect?&nbsp;&nbsp; Again this is something you can easily see for yourself and have seen for yourself just by flipping the box upside down making a dramatic difference.&nbsp; Play the box&nbsp; outside the car and see what it sounds like, take it in your house and use it on your home theater.&nbsp; The differences should be clearly audible.Anyway, there&#039;s plenty of generalizations we can make from experience, but plan on being surprised and mystified when your best predictions fly right out the window when you try to put them into practice.</blockquote>

[QUOTE="hispls, post: 8588132, member: 614752"] To some degree I think you can predict your main peaks via measuring corner to corner front to back dividing that into the speed of sound then dividing by 1/4 and 1/2. Expect standing waves around those points, predicting nulls may be more difficult as would be predicting overall gains. It's really a matter of wavelength. Low frequencies have a very long wavelength and are subject to interference from their own reflections coming from all directions. Most of this interference will be constructive (make it louder). You can use generalizations to get a ballpark idea what to expect but beyond that you need to test and ideally own an RTA or SPL meter to really quantify and see what's happening. Then again, I could be wrong and with enough data perhaps you could get a lot more accurate predictions than I expect? Again this is something you can easily see for yourself and have seen for yourself just by flipping the box upside down making a dramatic difference. Play the box outside the car and see what it sounds like, take it in your house and use it on your home theater. The differences should be clearly audible. Anyway, there's plenty of generalizations we can make from experience, but plan on being surprised and mystified when your best predictions fly right out the window when you try to put them into practice. [/QUOTE]

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