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<blockquote data-quote="Hintzyboy" data-source="post: 3458277" data-attributes="member: 566521">When speaking of low-end extension, lower and louder kind of go hand-in hand.&nbsp; You can&#039;t really isolate one from the other.The lower the note, the more air you have to move to be able to hear it.&nbsp; This generally means that a single 10 will appear to play lower than a single 8.&nbsp; In reality, they are playing EXACTLY THE SAME NOTES.&nbsp; The only reason the 10 appears to play lower is because it is playing LOUDER at the given frequency.&nbsp; But if you add another 8&quot; sub, the pair of 8s will have more surface area, meaning it will move more air, meaning it will play louder at a given frequency, meaning it will appear to play lower.So, if a 10 and an 8 are perfectly equal except for size, the 4 8s will have better low-end extension than the 2 10s.&nbsp; Not because the 4 8s can play lower notes, but because they can play those same notes with more authority.</blockquote>

[QUOTE="Hintzyboy, post: 3458277, member: 566521"] When speaking of low-end extension, lower and louder kind of go hand-in hand. You can't really isolate one from the other. The lower the note, the more air you have to move to be able to hear it. This generally means that a single 10 will appear to play lower than a single 8. In reality, they are playing EXACTLY THE SAME NOTES. The only reason the 10 appears to play lower is because it is playing LOUDER at the given frequency. But if you add another 8" sub, the pair of 8s will have more surface area, meaning it will move more air, meaning it will play louder at a given frequency, meaning it will appear to play lower. So, if a 10 and an 8 are perfectly equal except for size, the 4 8s will have better low-end extension than the 2 10s. Not because the 4 8s can play lower notes, but because they can play those same notes with more authority. [/QUOTE]

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