"Overall system performance is a function of the driver’s Thiele\/Small parameters and enclosure volume, which together will determine system Q and the system’s resonant frequency. Below the resonant frequency, sealed subwoofers typically feature a shallow roll-off of 12dB\/octave, which also corresponds with relatively low levels of group delay and ringing in the deep bass." [https:\/\/www.audioholics.com\/loudspeaker-design\/sealed-vs-ported-subwoofers]\n\n"Group delay has been found to be a major predictor of the "tightness" or transient accuracy of a subwoofer system. Group delay, in it's mathematical form, is the negative derivative of acoustic phase with respect to♪ requency. That is, group delay is a measure of how fast the acoustic phase of the system changes. Lower group delay numbers are indicative of a "tighter" sound of the subwoofer (to a certain point; once below a certain threshold, changes in group delay are no longer reliably detectable. The actual threshold is beyond the scope of this page, and as such will not be discussed). Conversely, higher numbers can indicate a "looser" sound."[http:\/\/stereointegrity.com\/wp-content\/uploads\/SIGroupDelay.pdf]\n\nSo I still didn’t see any proof that sealed is better for music. Most of the points to be made revolve around group delay which IMO and obviously others is usually so far below the threshold of audibility as to be considered if no consequence. Also, as mentioned, subwoofer Q, quality, integration and the room itself determine tightness. To say “sealed is best for music” is not only a gross misrepresentation, it’s also not true. I have designed, built and used BOTH kinds and you’re just plain wrong.