dude,to transport a 4x12 not to install one to jam the radio through...to go to gigs w/WHY? A single 8" driver IN THE RIGHT BOX and a well made amplifier such as a JL Audio amp (250watt) will pin you to the dashboard! That's right an
SINGLE 8" driver. I owned a high end audio chain for the last 35 years and sure we did outrageous 4x12 and and 3x12 installs for sports stars and local "recreational drug" dealers and the sound was absolutely nauseating......as if you were physically trapped inside a Marshall full stack at a rock concert. If that's the sound your after, go for it! I want to reiterate with not only a hearing loss warning but also to point out that we actually had clients physically blow out windshields with the driver arrangement you are contemplating!:NUTS
BMW 351I here and a 4x12 (slant only) slides in the trunk perfectly..back seat forward of course![]()