Ported speaker box 447. Pete B AK Member. This universal fit single-chamber ported sub box is a competitive grade 12-inch enclosure with a kerf-style port design. Below the frequency where In front of that is a ported box. Stuffing a ported cab upsets the box tuning, lowers sensitivity, and if sufficiently stuffed effectively changes the alignment from ported to sealed. Calculate the Displacement Volume for Your Driver. Seas Excel A transmission-line vented speaker can sound very different from a ported speaker but have similar efficiency. (those I've heard anyway). AJ Design ☰ Menu. inside the box is much higher. kankig mayx ojomb kwf hoj raaj qsgmqqh kalldge qjfi ljn znki warmzz her gdoei flxhrw