3512-04S 12" Shallow Subwoofer Pair with Sound Deadening Kit

MTX's shallow-mount 35 Series packs the same cooling and surround technology as the standard lineup into a body shallow enough for tight cavities. This bundle pairs two 12" SVC 4-ohm subwoofers, totaling 1200 W peak and 600 W RMS, with a Rockville RockMat 37-25 sound deadening kit so the panels around the box stop buzzing before the bass gets loud. The Inverted Apex surround adds cone surface area for more air movement and higher SPL, while the progressive suspension controls excursion at high power to keep distortion down. Spider Plateau Venting channels cool air straight at the voice coil, so thermal buildup doesn't cut a session short. The Rockville RockMat 37-25 kit covers 37.5 sq ft across 15 sheets of 2.5mm (100 mil) butyl rubber with an aluminum heat-resistant coating, shipped flat instead of rolled so it lays down flat on the first try. An embossed installation indicator flattens out once a sheet is pressed on correctly, and a roller is included to seat the adhesive fully. Applied to the trunk floor, rear deck, or doors near the enclosure, it kills the rattles and resonance that would otherwise blur low-end output and lets the subs hit harder at the same power instead of fighting loose panels. That combination suits a shallow enclosure where cabin space is limited but 12-inch output is still the goal, where the deadening mat does as much for perceived bass quality as the subs themselves.