well then since i have an audioque sub, but its in a flarred port enclosure tuned to upper fourties its a SQ sub now?... fact, the aq hdc3a was designed for more SPL orientations, however, we still geared the box towards a daily box with the ability to still get loud. it sounds good for an AQ, but any of what i listed would beat it. My old RE SX i had sounded better in SQ terms.
yeah, any sub can be made to have any designation,
but where the facts flow, a DD1512 was directed towards more loud than clarity..
never said they didnt have SQ, but theres better SQ for the Price under what was listed.