How are those square short length ports tuned so low?

[TriassicReef]

I see alot of boxes with square ports and super short vent length but are supposed to be tuned low. like this box in the marauder

https://youtu.be/liR6RWTs-UQ

and kinda like steve meades box? can somebody please explain why this is and how the port functions/designed. I am really confused

[Triticum Agricolam]

Well first off, just because that guy thinks his box is tuned to 29 Hz doesn't mean that it is.

Second off, tuning is a function of port area, box volume, and port length. If you have small port area, and/or lots of internal volume, the port doesn't have to be very long to tune low. The box in the video is pretty good sized and doesn't have as much port area as it probably should.

[TriassicReef]

Well first off, just because that guy thinks his box is tuned to 29 Hz doesn't mean that it is.

Second off, tuning is a function of port area, box volume, and port length. If you have small port area, and/or lots of internal volume, the port doesn't have to be very long to tune low. The box in the video is pretty good sized and doesn't have as much port area as it probably should.

Thanks bro your always to the rescue with the knowledge lol

[Broke_Audio_Addict]

That's a small port for those subs, I bet it sounds horrible.

[TriassicReef]

That's a small port for those subs, I bet it sounds horrible.

how does steve meades port work, it seems super small in comparison to the rest like the marauder one?