Anyone fancy helping me - Hertz ML2500 10"

I doubt it's designed to do sealed.

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You mean ported?
Looks to me like it's designed around sealed applications.

OP, if you have a little more space you can probably go a little bigger for a bit more low extension and output, but it looks to me like the manufacturer suggested sealed box is pretty close to optimum for good sound.

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The ML2500.3 box info on the Hertz website suggests a sealed 26 (0.92cu ft)litre box.The ported box for the original ML2500 is 22.7 litres (0.8 cu ft), does it make sense that the sealed box would be larger than the ported one?

I have about 35 litres (1.15 cu ft) available with the box shape I have so far, not sure what to build

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Does that mean that with my Alpine SWR-bt12 12" subwoofer I designed a bit larger than Alpine's recommendation for a sealed enclosure that too may get "..a bit more low extension and output..." I was hoping so!
John Kuthe...

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Generally high Q and low FS makes for a far better sealed box performer. Ported likely will give you more output around peak but possibly at the expense of flat response. you can download WinISD if you want to try and model it. As I said, just looking at the specs I'd say that sub is built around 1 cube sealed for optimum performance. Higher Fs and lower Qts is a sign that a sub will really benefit more from ported alignment.


Probably, but from every one I've seen Type R really shines in ported so you're shooting yourself in the foot to own that sub and not go ported.

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A ported box doesn't always mean super loud boomy muddy bass. If anything, a well designed and built box for that Type R (which, based on all other design decisions made on your build, would likely not happen) could sound much more pleasing.

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