Alright, I'm obviously making my own sub enclosure, as I love making my own stuff (pride, etc).

I was looking at Rockford-Fosgate's website and noticed that the recommended enclosure volume for a sealed box is 0.65 cubic feet.... but I did the math and used various programs I found online and I got a value of 3336.29 cubic inches (which is roughly 1.93 cubic feet). That's more than double the volume... I dunno about you, but that's a huge difference!

The only thing I can guess is that used a different value for Qtc... I was using the "default" .7, but in order for them to get their value, they must have used .96 as the value. (reversed and substituted some simple algebra to find this).

So then, my question is... should I use their recommended volume or the one I calculated out (again, various times with different methods, so my math is right)?

I was looking at Rockford-Fosgate's website and noticed that the recommended enclosure volume for a sealed box is 0.65 cubic feet.... but I did the math and used various programs I found online and I got a value of 3336.29 cubic inches (which is roughly 1.93 cubic feet). That's more than double the volume... I dunno about you, but that's a huge difference!

The only thing I can guess is that used a different value for Qtc... I was using the "default" .7, but in order for them to get their value, they must have used .96 as the value. (reversed and substituted some simple algebra to find this).

So then, my question is... should I use their recommended volume or the one I calculated out (again, various times with different methods, so my math is right)?

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