Ported subs got a deservedly bad reputation for music in the 80's and 90's because most of the brick/mortar subs available back then were simply really poor designs with egg-shaped FR curves, high distortion, and high port tuning (~35 Hz) and poor output linearity in the deeper octave. Actually - come to think of it - most of them still are pretty bad subs. :-)
Our sealed subwoofers do have an edge in time domain behavior - without the ringing exhibited with the porting system at/near port tuning (this can be seen as the 'tail of the comet' in a 3-D spectral chart). With that said, if the port tuning is sufficiently deep (say 20 Hz or even 16 Hz), the ringing will not occur over the common music bandwidth, and the GD curves of our sealed/ported subs are often very similar down to about 28 Hz (where they will then start to diverge).
Our sealed subwoofers also have a different FR than their ported counterparts - and that alone will alter their subjective sonic signatures. We design our sealed subs for a broad gradual roll-off slope starting in the low 30 Hz range, which will take best advantage of available room gain in small/medium size room.
The combination of the edge in time domain behavior and the optimized FR will typically be subjectively favored by the serious music listener who tend to overwhelming favor sealed subwoofers. But as others have stated above, our ported subs acquit themselves nicely on music too.
Director - Technology and Customer Service
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