First time box builder question!

[kungfoojesus 10+ year member]

I am building a sealed enclosure for one 12" infinity kappa perfect subwoofer. I plan on running

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[jellyfish420 10+ year member]

build it so internal volume is 1.3ft

 

[kungfoojesus 10+ year member]

thank you!

 

[Hook Me Up 10+ year member]

do it to 1.25 thats what i did i got a better output out of it

 

[coulthard_west 10+ year member]

ill agree with hook me up. i have 3 12'' jls and imade mine 1/4 bigger for each sub and it makes the sound output a lot better