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sub enclosure, 2 orion hcca 15.2's


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jameslopez1 
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Joined: September 27, 2008
Location: California, United States
Posted: September 27, 2008 at 12:43 AM / IP Logged  
Hi, im building sub enclosure for 2 Orion hcca 15.2's, the website says that both subs should have 7 cubic feet....and tuned to 35 hertz i want to port it in the middle and i was wondering if someone could tell me the measurements i should make the port for both of the subs..
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DYohn 
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Joined: April 22, 2003
Location: Arizona, United States
Posted: September 27, 2008 at 11:01 AM / IP Logged  
7 cuft ported @ 35Hz?  6" diameter round port 4.5" long.   https://www.the12volt.com/caraudio/boxcalcs.asp
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jameslopez1 
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Joined: September 27, 2008
Location: California, United States
Posted: September 27, 2008 at 2:51 PM / IP Logged  
what about a square portsub enclosure, 2 orion hcca 15.2's -- posted image.
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DYohn 
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Joined: April 22, 2003
Location: Arizona, United States
Posted: September 27, 2008 at 5:06 PM / IP Logged  
Same size.  6" port = 28.27 square inches of port area, so just make the opening equal to 28.27 sqin and the port length 4.5" long.  28.27 sqin = 2" X 14.135", for example.  Any geometry that equals the same opening area will do.
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