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The FXXL 12 is Sky High Car Audio's ferrite flagship subwoofer, a 12-inch dual-voice-coil driver rated at 5000W RMS. Its standout hardware is a 4-inch, 8-layer high-temperature voice coil and a quad-stacked ferrite magnet motor, built to hold output under extreme demand while staying drivable day to day. It suits SPL competitors and bass-heavy daily builds with the amplifier power and enclosure volume to feed it. Against the brand's FMX line it adds coil surface area and thermal headroom, but it is a heavy, power-hungry driver that needs a stout electrical system and a large enclosure.
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Lowest price we've seen: $894.95 on Nov 12 at Amazon. Tracked across 1 store since Nov 12.
The Sky High Car Audio FXXL 12" subwoofer is a dual voice coil (DVC) driver rated at 5000W RMS. It is the ferrite flagship of the FXXL Series, built for high output and competition use. The voice coil is a 4" 8-layer high-temp design with more surface area and thermal mass for cooler operation and more headroom.
The motor is a quad-stacked 9.96" (253mm) Y35 ferrite structure with an aluminum shorting ring, pole vents and four drilled and tapped backplate holes. The holes allow reinforced mounting or added cooling. The cone is hardened paper with fiberglass cone support. It is tooled with a recessed cavity that seats the forged carbon fiber dust cap. A secondary pressure cap under the primary cap acts as a pressure buffer and reinforcement.
A 10" progressive spider pack and a precision-molded foam surround control the cone through long strokes. Low Fs and high BL help it play across the bass range. The finish is all black with a carbon dust cap and a tooled SHCA magnet boot.
