| Re: Avoiding port noise -- churf and resonance.
I basically try to stay below 34m/s as well. Good luck trying to stay below 17m/s at max power with a long throw subwoofer design. I'm not totally sure about this, but I think that the larger the diameter, or area of the port, the higher the vent speed before it becomes audible, or overloads. An 8inch port should be able to handle 25m/s air speed better than a 2inch port right? I could be completely off base here, but I believe that I read that somewhere.
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