Hertz HMS 12 S4-LD-SW

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Hertz HMS 12 S4-LD-SW - 12" 4-Ohm Marine Subwoofer with RGB LEDs, White Sport Grille

The Hertz HMS 12 S4-LD-SW, is a powerful and versatile 12-inch marine subwoofer. Designed for open-air installations, this subwoofer delivers deep, impactful bass without the need for a dedicated enclosure.  With its customizable RGB LEDs and paintable sport grille, you can personalize your sound and style.


Hertz HMS 12 S4-LD-SW marine subwoofer is available in 2 or 4-ohm single voice coil versions, featuring a stunning 500 W continuous power handling. The new HMS 12 marine sport grille subwoofer is optimized to perform in open baffle applications for deep and punchy bass without the need to build a dedicated enclosure.

The sport grille, featuring built-in LEDs, can be easily painted the perfect color for your vessel.  The motor and suspension design is optimized for high-power, infinite-baffle operation featuring long linear excursion capability for tremendous output with low distortion. 

Hertz Marine subwoofers not only add tons of bass output to your system but also relieve the main speakers from the hard work of reproducing the lowest frequency range, thus maximizing overall system performance for unlimited sound pressure and emotion!

Technical Specs

Size mm (in.) 300 (12)
Power Handling - Continuous W 500
Power Handling - Peak W 1000
Impedance Ohm 4
Depth mm (in.) 191 (7.52)
Voice Coil Type single
No Filter Component 4Ω SPORT LED SUBWOOFER
Voice Coil Ø 65.5 (2.6)
Magnet size D x d x h mm (in.) 156 x 80 x 40 (6.14 x 3.15 x 1.57)
Weight of one component kg (lb.) 7,6 (16.8)
Magnet High density flux ferrite
Cone Polypropylene with UV inhibitors

Weight: 17.2 lb