2 6in ports or 4 4in port

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48 inches of port is perfect for a btl in 4.3 cubes. 11 inches per cube
But he has 4.3ft^3 total to work with, so after displacements he's looking at a really long 8" port in order to get a 35hz tuning, which will drop his internal volume down quite a bit. Right now it looks like it ends up being 3.35ft^3 with a 28" long flared 8" port in order to get a 35hz tune.

 
i love i ppl just say sh1t with out think about will this work i really dont think he has 36 inches of room in the front to back of his box cause dont for get you need 8 inches of room for the port from the back of the box

 
just lisin to what 2 ppl are saying to you and not the other ppl with there ideas that are impossible to do 13 inches long tuned to 35 and make sure you have 6 inches of room from the back flair of the port to the back of the box

 
i will so about 19 in from top to bottom firing up ? if i place the port in center and sub off to one side will tht hurt performance or just look funny I am looking for performance before looks

 
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