Hertz HMS 10 B

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

Add powerful, deep bass to your boat or powersports vehicle with the Hertz HMS 10 B marine subwoofer. This 10-inch subwoofer is optimized for open-air installations, eliminating the need for a dedicated enclosure.  With its marine-certified design and robust construction, the HMS 10 B is ready to deliver impressive bass performance on the water or off-road.


  • 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 Parameters - 

  • D: 210mm 
  • Xmax: 13,5mm
  • Re: 4,5 Ohms
  • Fs: 41Hz
  • Le: 0,9mH
  • Vas: 37L
  • Mms: 69g

Technical Details


Note: Products 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