Hertz HMS 10 B-C

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Hertz HMS 10 B-C - 10" 250 Watts RMS 4-Ohm Marine Infinite Baffle Subwoofer, Black

Amplify your on-water adventures with the Hertz HMS 10 B-C marine subwoofer. This 10-inch, 4-ohm subwoofer is optimized for open-air installations, delivering powerful, clean bass without the need for a dedicated enclosure. With its durable construction and marine-grade certifications, the HMS 10 B-C is built to withstand the harsh marine environment and provide years of reliable performance.


  • Power Handling: 500 W Peak, 250 W RMS
  • Gold-plated Corrosion Resistant Brass Connection Terminals with Silicone Cap Protecting Leadwire Junction Point
  • Voice Coil: Yes
  • Impedance: 4 Ohms

The HMS 10 B long throw 10” marine subwoofer, also available in the black option HMS 10 B-C, is engineered for infinite baffle application. It relieves the main speakers from the hard work of reproducing the lowest frequency range, adding bass output and punch to maximize the overall system performance.

The FEM optimized high-excursion mobile equipment of HMS 10 B with a 50 mm (2”) voice coil is driven by a massive magnetic group, to obtain a perfect control also at very high level SPL. Engineered and tested for the real environment of application (UV, salt-fog, vibrations, water spray, thermal shock, dust ) HMS 10 B is nature-proof.

The progressive design aramid fiber spider with silicone-insulated lead wires ensures durability and constant performance over time. The gold-plated corrosion resistant brass connection terminals with silicone cap protect the leadwire junction point.


Hertz Pure Marine Certified Product Stamp Featuring the IP65 Protection Grade, ASTM-D4329 Standards for UV Resistance and ASTM-B117 for Salt Fog Operability Progressive-Design Aramid Fiber Spider with Silicone Insulated Lead Wires Ensuring Durability and Constant Performance Over Time. FEM Optimized High-Excursion Mobile Equipment Driven By a Massive Magnetic Group Encapsulated into a Marine-Grade Polymer Injected Basket.


Power Handling: 500W

Peak Impedance: 4 Ohms

Magnet: Ferrite

Cone: Polypropylene with UV Inhibitors

Electro Acoustic


D: 210mm

Xmax: 13,5mm

Re: 4,5 Ohms

Fs: 41Hz

Le: 0,9mH

Vas: 37L

Mms: 69g

Technical Details


NoteProducts with electrical plugs are designed for use in the US. Outlets and voltage differ internationally and this product may require an adapter or converter for use in your destination. Please check compatibility before purchasing.

Weight: 11.55 lb