Re: TC9 15" subwoofer out of my 2007 mazda 3 sedan
I've got it in a 4 cubic foot (net) box in the trunk. The trunk has minimal extra space as you can imagine. It can be ran sealed as well so you could have a significantly smaller box. I think the gross volume of my box is like 5.7 cubes and it fits in the trunk with a little extra space for amplifiers, running wires, and other fun audio accessories.