This is a sealed enclosure and the internal volume is just slightly over 1 cubic foot. If you're not looking for "boom" go with the 10" enclosure (we make it both ways) and pair it with the right equipment and what i mean by that is use a woofer/amp combo with some range. Don't use junk, whether it be from my shop or elsewhere. Use a woofer equivilent to the JL Audio 10W3V3 or the JL 10W6V2 (the latter preferably). The W6 will hit hard when needed but precisely at the same time. Pair that with a good amp between 250-350 watts and i'd say you'd have a winner.