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 15th July 2006, 02:55 PM #11 edjosh23   diyAudio Member     Join Date: Oct 2004 Location: Raleigh/Atlanta Godzilla actually told you it would be 69" tall internal. Pioneer B20FU20-51FW 8" full range L = (Line length) 138" So = Driver 30" down from sealed end of cabinet Sm = 200"^2 All internal That means you halve L to get cabinet hight = 69" Sm is mouth volume or your foot print. I'd suggest using the golden ration 1.618. Then you get out your calculator and plug in numbers to find the other dimensions. 11" x 18" = 198"^2 You can choose those dimensions or come up with your own and more accurate or larger dimension. Once there you you your internal volume and all internal dimentions. 69" x 11" x 18" . Last thing to do is to find the length of the internal taper baffle. I'm not going to figure that out, that takes a bit more math, but is not diffucult. My suggestion would be to draw out your plans to scale. Josh
 15th July 2006, 05:11 PM #12 weikertball   diyAudio Member   Join Date: Jan 2005 Location: Kaiserslautern, Germany yeah, I got those dimensions once I worked on it....for a while. The inside baffle shouldn't be too hard to find if it's going to be 10" away from the bottom, front and back of the enclosure. It will be 10" away because it's half of the depth (a=b=c=d/2)
 15th July 2006, 09:23 PM #13 edjosh23   diyAudio Member     Join Date: Oct 2004 Location: Raleigh/Atlanta The internal baffle will be 10" away from all sides if your Sm is 20"x10" Josh
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Quote:
 Originally posted by edjosh23 Sm is mouth volume or your foot print. I'd suggest using the golden ration 1.618. Then you get out your calculator and plug in numbers to find the other dimensions. 11" x 18" = 198"^2 You can choose those dimensions or come up with your own and more accurate or larger dimension.
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http://www.diyaudio.com/forums/showt...572#post942572

http://www.diyaudio.com/forums/showt...832#post943832

http://www.diyaudio.com/forums/showt...770#post945770

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 16th July 2006, 02:59 AM #15 weikertball   diyAudio Member   Join Date: Jan 2005 Location: Kaiserslautern, Germany welp, I have some building to do

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