Originally Posted by LowTech1
I'm wondering about the sound difference... Ported vs non ported
Now THERE's a can of worms. Responses to this issue are all over the map hereabouts.
Folks who ought to know (e.g. Brian at Rythnmik) feel the ported designs are a bit less tignt. But if you look over the thread titled (I think) Archaea's KC blind subwoofer audition, you'll see that a fair number of folks who had reasonable experience with different subs were completely unable to reliably say which sub was ported and which sealed.
Which lends credence to the idea that well executed examples of the two will not vary significantly in sound quality. This from a person whose bias is towards sealed designs, FWIW).
The ported will get louder, cleaner. Whether you need the louder is impossible for me to tell. THe SB12NSD will not likely exhibit the one semireliable positive for sealed subs - - slower rolloff at the bottom and the possibility for significant output below a ported speaker's tuning frequency. The SB12NSD just doesn't have the kind of raw horsepower that would be needed to get big time output below 25 Hz or so. That takes big amps, heavy drivers, lots of EQ (often built right into the sub) and more money.