infinity kappa perfect sealed 1.0 gross or net?

[spec 10+ year member]

i m having a friend build a sealed box for an infinity kappa perfect 12.1 the manual states to use 1.0 that[ includes driver displacement.] now in my book that means 1.0 gross then put the sub in.but my friend says to make 1.0 after driver displacement which i m afraid would be a little big and thus not sound" perfect" i will line with 1 inch insulation. so..does"include drive" mean gross?

also does anyone have any experence with this sub? it gets great reviews

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[spec 10+ year member]

i m a bit of a newbie .i know this question might seem dumb but i really need help!!

 

[Rich B 5,000+ posts]

The tech data sheet that came with my Perfect 10.1's says the size includes the sub, but also a 1" layer of fiberglass on all inside surfaces to be the correct size.

Its probably the same with the 12".

 

[Spooney 10+ year member]

I doubt you will hear much difference either way. We are talking about a .1 to .15 cubic feet difference tops. Not likely to be an audible difference. I would rather the enclosure be a little too big than too small though . Just my opinion

 

[Louisiana_CRX 5,000+ posts]

sealed sounds better than ported ...ported is louder than sealed ....

 

[blazian87 10+ year member]

Yea it's not gonna make a difference but it's better to be on the bigger side. If you end up too big, you can always add something inside the box to make it smaller, whereas with a smaller box you gotta use fiberglass inside. You'll be fine with 1.0 cu ft net!