15" box - too big?

[Bluecamry 10+ year member]

So my Massive Audio CW15 isnt exactly at home in the teensy (whd) 21 x 16.5 x 18 box I have for it right now, and so I just bought a (whd) 33 x 16 x 21 box. I am now worried this is too big, since the specs Massive gives are 18 x 20 x 22 (hwd?) with a 2 x 16.5 x 14 port size (though, the sub can probably move more than this, this is mostly for SQ with ported for loud accuracy from what I understand). Is 33 x 16.5 x 21 going to be too much air for my sub? I can hold off for a little while, but I want a good sound as soon as possible, and dont the money time or skill required for a custom box.

I dont know the exact port size, but heres a picture for a general guideline:

So... current, way too small box,

21 x 16.5 x 18

Massive Audio recomended specs

22 x 18 x 20 (?)

Box i just bought

33 x 16.5 x 21

Any ideas? I know this sub can move a lot of air, but im worried 4 cubic feet may be too much? Its a 150$ box, and after the first box I bought is way too small, im being weary now. Any help is appreciated.

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[Bluecamry 10+ year member]

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[btlking 10+ year member]

if you already purchased it then try it and find out

 

[Bluecamry 10+ year member]

I may have to... but I was hoping someone with at least a simular sub would have some input.

 

[mikey060 10+ year member]

150 bucks huh...why dont you just get fisher to build you a box. i dont know what his cost, but then you wouldnt have to worry about it fitting/being to big..