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these shaps are just generic but the shape dose have a little afect on the tone of note but not on these boxes. there just desinged to give about 39 leters seald in a shpe that should fit into most cars. 39 leters is about the average size these days for a seald box as most subs for cars are, a seald box will allways make a sub produce more power. but on the other hand a ported or somtimes larger box will give the sub a nicer tone or note but is not done very often in cars as when you drive most of what you hear will be DOF! DOF! DOF! most peple in there teens or mid 20s dont realy care to much for tone as they prefer max volume - "if its to loud, your to old!"

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In a sealed enclosure the shape won't make any difference at all within reason. Yes standing waves can be an issue but your enclosure will need to be meters long for this phenomenon to occur.

As for the argument of sealed vs ported being better for SQ and SPL, either enclosure can sound fantastic and either can blow your head off. It is all about power and careful design. :thumbsup:

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