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Hertz HMS 10 B-C2 500W 10″ Marine Infinite Baffle Subwoofer



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Engineered for Infinite Baffle Application


The 2 Ohm configuration makes the most of the amplifier power. 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-C2 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.


  • Engineered and tested for the real environment of application (UV, salt-fog, vibrations, water spray, thermal shock, dust )
  • Long-throw 50mm (2”) voice coil woofer engineered for infinite baffle application featuring polypropylene cone injected with UV inhibitors and comolded Santoprene surround
  • 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
  • Gold-plated corrosion resistant brass connection terminals with silicone cap protecting leadwire junction point
  • 2 Ohm load to make the most of amplifier power


  • Size mm (in.): 250 (10)
  • Power Handling – Peak W: 500
  • Power Handling – Continuous W: 250
  • Impedance Ω: 4
  • Sensitivity dB SPL: 88.5
  • Voice coil Ø mm (in.): 50 (2)
  • Xmax mm: 12.3
  • X-mech mm (in.): ±16.3 (0.64)
  • Re Ω: 2.1
  • Fs Hz: 43
  • Vas l: 30.46
  • Qts: 0.6
  • Qes: 0.63
  • Qms: 12.3
  • Spl dB: 88.5

Hertz Audio: Pioneering Excellence in Car and Marine Audio Systems

Hertz is a renowned brand in the car and marine audio industry, celebrated for its dedication to sound quality, innovation, and craftsmanship. Since its inception, Hertz has been at the forefront of audio technology, developing high-end speakers, amplifiers, subwoofers, and accessories that deliver superior sound experiences to audio enthusiasts worldwide.

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