Horizon HZS 12" Subwoofer

Sundown Audio HZS Series SubwoofersPurpose-Built for Tight Installs. Powered by Real Performance. The Sundown Audio HZS Series was engineered from the ground up to bring powerful, clean bass to space-limited installations—without sacrificing output, reliability, or thermal performance. Whether you’re working with a slim enclosure behind a truck seat, under a rear deck, or in a stealth build, the HZS delivers the kind of low-end impact you expect from Sundown. Available in 10" and 12" sizes, the HZS is a shallow-mount subwoofer rated for 600 watts RMS and designed to thrive in ported enclosures, though sealed options are also supported. Each model features a 2.5" black aluminum voice coil, a high-roll surround, a progressive spider, and a vented motor design that keeps things cool when the music gets loud. Built for daily abuse and engineered for clean excursion, the HZS combines strength, efficiency, and low-profile fitment into one aggressive package. It’s the ideal solution when you