- Apr 3, 2003
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- Editor-in-Chief, Bass Gear Magazine
"sealed vs. ported thing".... anyone care to elaborate for someone who has never played a sealed cab? How are they different?
Sealed cabs have a more controlled response. The back pressure from the air within the cab keeps the driver from "flopping around" (though I'm not saying that ported cabs will necessarily "flop," but sealed cabs are tighter in this regard, respectively). Ported/vented cabs are typically more sensitive/efficient, and because there is no back pressure (or a lot less), the drivers can move more, and in turn, move more air. They tend to sound bigger and deeper than sealed cabs, but not as controlled.
You also have the situation with your typical ported cab where the lows that your brain perceives are emanating from two (or more) sources - the driver(s) and the port(s)/vent(s). This can contribute to that big/deep thing. With a sealed cab, the lows are emanating pretty much from just the driver(s) (though in both cases, the sides/back of the enclosure itself can contribute a little bit). This is the "single point source" thing I was talking about earlier. These factors contribute to what makes sealed and ported cabs sound different. Some folks prefer one kind, and some prefer the other.
This is not to say that there are not deep sounding sealed cabs (though this usually means that they are on the larger size), nor does it mean that there are not tight-sounding ported/vented cabs, but that's the basic difference in a nutshell.