4.5@ 27hz box?

[jeremiah 10+ year member]

im going to make a 4.5cu.ft@27hz box for one mach5 18" mj-18

I want two round ports what size do they have to be?

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[maldecido33 10+ year member]

that is going to be a very large enclosure

 

[jeremiah 10+ year member]

is that the lengeth of both ports combine

or each port

 

[jeremiah 10+ year member]

that is going to be a very large enclosure

? that's the recommended box