MTX 3512-04S 12" Shallow Mount Car Audio Subwoofer

The MTX 3512-04S is a 12" single voice coil, 4-ohm shallow mount subwoofer built for vehicles where trunk or cabin space is tight but bass still matters. At just a 3.375" mounting depth, it fits into pickup truck cabs, sports car trunks, and daily drivers that don't have room for a deep-mount 12" subwoofer, without giving up the SPL benefit of the larger cone.

Rated at 300W RMS and 600W peak, the 3512-04S uses the same Inverted Apex surround found across MTX's 35 Series lineup, increasing usable cone surface area for greater volume displacement and higher SPL than a standard surround design of the same size. A progressive suspension keeps excursion under control at high power, limiting distortion so bass stays clean rather than breaking up as volume increases. Spider Plateau Venting targets cool air directly at the voice coil, managing the heat buildup that causes output to fade during extended, high-volume listening.

Designed specifically for sealed enclosures, the 3512-04S pairs with a 0.8 cubic foot net volume box and a recommended amplifier power of 150-300W RMS. Its 23Hz to 130Hz frequency response and 84.4 dB sensitivity make it a practical choice for anyone who wants 12" bass without redesigning their trunk around a deep-mount subwoofer.