| Re: Sealed or Ported
The response of the D2 in 260 liters with a 6" port that is 30" long is quite good. The high Le and medium Bl are what would be causing the -3db point to be reached early on in simulations, but in real life, the output is pretty flat. I think the published Le is a bit high.
mchorter, the design I mentioned is for a D2, you'll want to go bigger with a D4.....though I would personally stick to the D2.
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