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sub box design

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Member - Posts: 1
Member spacespace
Joined: March 23, 2011
Location: Georgia, United States
Posted: March 23, 2011 at 2:40 PM / IP Logged  
I have four Polk Audio DXi 12's, 4 OHM SVC. Right now I have them in a sealed box and I want to build a ported box. I have the specs from Polk on size and port dimensions but I dont want to have 4 ports. What I need help with is converting the 4 ports into one slot port, I have no idea where to start doing the math. Any help would be greatly appreciated.
Copper - Posts: 71
Copper spaceThis member has made a donation to Click here for more info.spacespace
Joined: March 17, 2011
Location: Tennessee, United States
Posted: March 29, 2011 at 1:51 PM / IP Logged  
you need to find port volume of the round ports , i believe its square inches
  1. then do the math for the slot port volume
  2. a little bit of math and you should be able to get the same Hz rating
1000 watts of lp, now need sum hp an mids

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