Sure. Porting a woofer or subwoofer is a way of pushing the speaker down lower flat. The problem is they roll off quickly below that. Sealed subs and woofers are less efficient, start rolling off earlier, but continue on down lower than ported speakers. Ports can make noise. Sealed subs can play just as loud but require more power to do it. Since they go lower you can use DSP and a lot of power to produce very low frequencies. I make subwoofers and will only make sealed ones. I I use 2500 watts per sub with digital signal processing to align the subs with the main speakers.
