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Troy
Dodge Dakota
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4/19/2003
01:14:21
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 Subject: Port size. Anyone know?
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Hey, does anyone knows how to calculate the size of the tube needed to port a box with the airspace of 1.364 ft cubed? Someone told me a tube that has a 3 inch diameter and is 12 inches long. Can anyone comfirm this?
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dakotaster
Dodge Dakota
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4/20/2003
11:02:11
|  RE: Port size. Anyone know?
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I think it depends and the type of speaker i have a 10" rockford HE in 1.0cf my port is 3" dia and 13.25 long. If you not sure check the web site of the brand of speaker.Rockfordfosgate.com has alot of info on this subject in their rftech section. hope this can help you.
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Troy
Dodge Dakota
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4/20/2003
13:49:27
| RE: Port size. Anyone know?
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Well Im getting a 10 inch Rockford Fosgate HE2 RFP4210. So I guess our port sizes are about the same.
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dakotaster
Dodge Dakota
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4/20/2003
21:53:27
| RE: Port size. Anyone know?
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That port size is for the 1.0cf box i dont know if that will work quite right with your 1.364 box. That rockford website will give you the exact size box and port size.
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Rich
Dodge Dakota
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7/13/2003
14:23:45
| RE: Port size. Anyone know?
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What size sub, which sub, what do you want it tuned to?? With out knowing what the magnet displacement is and not knowing what you want it tuned to. I came up with a 3" round port at 9.25" long is 35 hz. That should be good. If you did the port at 12" long it would tune the box to 31.37hz.
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