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Hertz

HMS 10 B-C

10" (25cm) Subwoofer

Normal price 209,00€
Normal price 209,00€ selling price 209,00€
incl. VAT , possibly plus shipping

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Highlights

  • Power 250 W RMS, 500 W peak, impedance 4 ohms, 50 mm voice coil.
  • Aramid fiber spider, silicone insulated wires, durable and robust.
  • Protected from UV and salt spray, polypropylene membrane with UV inhibitors.
Seen more cheaply Personal Offer
brand: Hertz
Delivery time:
Available, in 3-8 days with you
Number:
Piece
Watt RMS:
250
Subwoofer Type:
ferrite
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Normal price 209,00€
Normal price 209,00€ selling price 209,00€

The HMS 10 B-C is a powerful marine subwoofer from the renowned company Hertz. With its 10-inch format (25cm), it delivers impressive bass performance and is specifically designed for unlimited sound wall applications. Features of this subwoofer include its FEM-optimized high-performance motor with a 50mm voice coil and an advanced aramid fiber spider with silicone-insulated connection wires, which provide durability and consistent performance over time. Designed to withstand extreme conditions such as UV radiation, salt mist, vibrations, water spray, thermal shock, and dust, the HMS 10 B-C is therefore the ideal choice for maritime sound requirements. Additionally, the gold-plated connection terminals made of corrosion-resistant brass with silicone caps provide optimal protection for the connection point of the connection cable.

Technical Data

  • Size mm 250
  • Load capacity - KRMS W 250
  • Load capacity - Peak W 500
  • Impedance Ohm 4
  • Depth mm 191
  • single coil
  • Swing coil Ø 50
  • Magnet size B x T x H mm 140 x 60 x 30
  • Weight 5.1
  • High Density Flux Ferrite Magnet
  • Membrane polypropylene with UV inhibitors
  • Xmech mm ±19

Electro-Acoustic Specifications

  • D mm 210
  • Xmax mm 13.5
  • Re Ohm 4.5
  • Fs Hz 41
  • The mH 0.9
  • Vas I 37
  • Mms g 69
  • Cms mm/N 0.22
  • Bl T*m 10.2
  • Qts 0.71
  • Qes 0.76
  • Qms 11
  • Spl dB 88

Physical Specifications

HMS 10 B-C

  • A 277 mm
  • B 230 mm
  • C 191 mm
  • D 145 mm
  • F 46 mm

Frequency response

HMS 10 B-C

housing

Sealed Box - Compact

HMS 10 B-C

HMS 10 B-C

Housing Data - Sealed Box

  • Vb l(cu.ft.) 50 (1.77)
  • Fb Hz 54
  • Qtc 1.05
  • W mm 440
  • H mm 440
  • D mm 365
  • Mounting Hole - M 230
  • Wood Thickness 19

Sheet Cutting List - Sealed Box

  • A mm 440 x 440 quantity 2
  • B mm 440 x 327 Quantity 2
  • C mm 402 x 327 Quantity 2

Sealed Box - Performance

HMS 10 B-C

HMS 10 B-C

Housing Data - Sealed Box

  • Vb l(cu.ft.) 71 (2.51)
  • Fb Hz 51
  • Qtc 0.99
  • W mm 460
  • H mm 460
  • D mm 450
  • Mounting Hole - M 230
  • Wood Thickness 19

Sheet Cutting List - Sealed Box

  • A mm 460 x 460 Quantity 2
  • B mm 460 x 412 Quantity 2
  • C mm 422 x 412 Quantity 2

features

HMS 10 B-C

  • Developed and tested for the real application environment (UV, salt mist, vibrations, splashes, temperature shock, dust).
  • Langhub 50 mm voice coil subwoofer (2") for infinite baffle applications with polypropylene membrane with UV inhibitors and combined Santoprene surround.
  • Advanced aramid fiber spider with silicone-insulated connection wires, ensuring durability and consistent performance over time.
  • FEM-optimized mobile devices with high deflection, powered by a massive magnetic group encapsulated in an injection-molded marine-grade polymer basket.
  • Gold-plated, corrosion-resistant brass terminal connectors with silicone cap that protects the connection point of the connection wire.
The HMS 10 B-C from Hertz has been specifically designed for use in demanding marine environments and can withstand a lot. Especially if you enjoy long boat trips or your ship is exposed to extreme weather conditions, you can rely on this subwoofer. The UV inhibitors in the polypropylene membrane protect against strong sunlight, so the material does not wear out as quickly. At the same time, the housing of the subwoofer is robust enough to withstand salt mist, vibrations, and even spray water, which is essential for everyday life on the water. Hertz has also equipped the HMS 10 B-C with an advanced aramid fiber spider that provides additional stability. The silicone-insulated connection wires also prevent possible damage from moisture, contributing to overall longevity. Thanks to the gold-plated connection terminals made of corrosion-resistant brass and a protective silicone cap, the connection is optimally protected against external influences. So if you are looking for a rugged bass wonder for your marine application, this model is likely just right for you. You can find more technical details at Hertz itself.
The HMS 10 B-C excels with powerful bass reproduction, specifically designed for maritime use. At first glance, the generous 50 mm voice coil stands out, which, in combination with the massive ferrite magnet, ensures optimal freedom of movement and deep bass response. Especially if you enjoy listening to music at high volumes, you will be thrilled by the sound spectrum that remains convincing despite adverse environmental conditions. The FEM-optimized structure also increases the efficiency of the entire system: the voice coil can move precisely without unwanted distortions. Another advantage is the tuned Santoprene surround, which stabilizes the diaphragm movement. Thus, you can enjoy top-notch, rich bass even in choppy waters. Hertz places great importance on your listening experience with this subwoofer, so you can benefit from the full sound profile whether you are below deck or on deck.
This 10-inch marine subwoofer from Hertz makes a clear statement with its performance values. It has an RMS power handling of 250 watts and a peak power handling of up to 500 watts, giving you ample reserves for powerful bass impulses. The 4-ohm impedance also makes it ideal for various amplifier configurations. With a frequency response that starts at around 41 Hz, the HMS 10 B-C is suitable for deep bass effects that you can not only hear but also feel. The Xmax of 13.5 mm symbolizes the maximum linear cone excursion, which is responsible for delivering solid pressure. Additionally, the 50 mm voice coil is a real highlight inside: it ensures precise, intense bass reproduction even at higher volumes. If you are looking for a subwoofer that reliably accompanies you at every boat party, a glance at the data sheets from Hertz quickly shows why the HMS 10 B-C could be the right model.
With the HMS 10 B-C, you have two main installation options: the infinite baffle or a sealed enclosure. If you integrate the subwoofer into an infinite baffle, there is essentially no enclosing volume, which can be practical but is also technically a bit more challenging. Make sure to have a stable and airtight mounting surface to prevent unwanted air leaks and keep your bass tight. On the other hand, if you choose a sealed enclosure, you should pay attention to the specified volume that Hertz recommends – for example, 50 liters for a more compact tuning or 71 liters for a deeper bass profile. The cutting lists show you exactly how to construct your own enclosure by using, for example, 19 mm thick wood. It is important to have careful insulation inside to reduce resonances and enhance bass quality. If you consider these points, you will enjoy rich and precise bass for a long time.
In speakers used in maritime environments, resilience and long-term stability are crucial. This is exactly where Hertz comes in with the advanced aramid fiber spider in the HMS 10 B-C. Aramid fibers are particularly tear-resistant and temperature-resistant, making them ideal for the constant demands of a subwoofer. The spider keeps the diaphragm and voice coil in the correct position, ensuring a constant and precise oscillation. As a result, the sound remains consistently good even after prolonged use. Additionally, the connection wires are insulated with silicone, which gives moisture and corrosion almost no chance. This significantly increases the lifespan of the marine subwoofer and ensures that your woofer operates reliably even after many hours at sea. Especially when you want to fully enjoy your sound experience on the water, this robust construction provides you with the necessary security.
To ensure that your subwoofer functions flawlessly not only at the beginning but also after several seasons, Hertz places special emphasis on corrosion-resistant connections. Therefore, the HMS 10 B-C uses gold-plated brass terminals that not only look high-quality but are also extremely resistant to saltwater and other external influences. A silicone cap is placed over the terminals to further seal the contact area. This is a real advantage, especially in environments with high humidity and dirt particles. In this way, the transition resistance remains low, and your subwoofer can deliver its full power. The cable fixation is also significantly more reliable, as no pull or moisture can affect the connection. With this design, you can enjoy rich bass for years without having to worry about rusty or loose connections later on.
The HMS 10 B-C is primarily a marine subwoofer designed for use in boats or similar moisture and weather environments. However, it is also conceivable that it can be used in car environments if you have the appropriate know-how. Many drivers of BMW, Audi, Mercedes, or VW have already shared experiences with marine components in classic car audio setups and report no significant obstacles. However, you should always keep in mind that a marine speaker comes with different seals and protective measures that are not necessarily required in a vehicle. The installation space should also be carefully checked, as a 10-inch subwoofer needs sufficient room behind the panels. If you are planning such a project, it is worth taking a close look at the specifications from Hertz and considering possible custom constructions for the vehicle to ensure everything fits perfectly in the end.
In maritime environments, humidity is usually high, which can quickly lead to sound quality losses or even damage for many speakers. The HMS 10 B-C, on the other hand, relies on a combination of selected materials and a thoughtful design to counteract this. The polypropylene membrane with UV inhibitors is inherently resistant to moisture. Additionally, the Santoprene surround is not only aging-resistant but also allows for freedom of movement in any weather. The solid coil construction with aramid fiber carrier and silicone-insulated wires also ensures consistent performance. Thus, the subwoofer maintains its precise bass reproduction even when it is put to the test in rough seas. Those who want a clear sound image without worrying about rust, deformations, or electrical short circuits are well advised with this marine subwoofer from Hertz.
A larger, sealed enclosure is particularly worthwhile if you prefer deep, controlled bass and do not want to forgo a bit more sound volume. Hertz, for example, recommends an enclosure volume of around 71 liters for the HMS 10 B-C, which gives you a bit more depth in the bass range. This additional volume allows the diaphragm to oscillate a bit further, making the low frequencies sound stronger and fuller. However, a larger enclosure naturally also takes up more space, which you need to plan for in your boat or other installation location. Make sure to build the box accurately, cut the panels correctly, and seal all joints airtight. A clean interior insulation also helps minimize disturbing resonances. If you keep all this in mind, you will achieve an incredibly rich yet precise bass that will surely impress you and your fellow travelers.

Elettromedia SpA
62018 Potenza Picena (MC)
Strada Regina km 3,500
Italy

Contact person:
Simone Iampieri
Executive Director Assistant
T +39 0733 870 813
Elettromedia SpA
62018 Potenza Picena (MC) Italy
Strada Regina km 3,500
T + 39 0733 870 870

Contact: simone.iampieri@elettromedia.it

Product Specifications


Manufacturer

Product type

Features


  • Highlights

    • Power 250 W RMS, 500 W peak, impedance 4 ohms, 50 mm voice coil.
    • Aramid fiber spider, silicone insulated wires, durable and robust.
    • Protected from UV and salt spray, polypropylene membrane with UV inhibitors.
  • Uvp

    209

weight

3.7 kg

Technical data


Watt RMS Load Capacity

250

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Your advantages with Masori


Buy the Hertz HMS 10 BC subwoofer online: Highest performance for marine audio enthusiasts

The Hertz HMS 10 BC subwoofer impresses with its robust and powerful construction, specifically designed for extreme marine use. Its RMS power handling of 250 W is particularly impressive, ensuring consistently high-quality bass performance over extended periods. The maximum power handling reaches an impressive 500 W, meaning the subwoofer delivers reliable sound even at high volumes without losing precision. Its 10-inch diameter ensures powerful reproduction of even the lowest frequencies. Masori's renowned Lowest Price Guarantee also ensures that you'll always get this subwoofer at the best price.

Hertz HMS 10 BC with 4 ohm impedance for precise sound reproduction

The Hertz HMS 10 BC subwoofer has an impedance of 4 ohms, making it ideal for use with powerful amplifiers. Impedance significantly influences sound reproduction: A lower value would increase power consumption and reduce resistance to distortion. At 4 ohms, the sound remains balanced and the bass reproduction powerful.

Top-class Thiele-Small parameters for the Hertz Marine subwoofer

The Hertz HMS 10 BC impresses with its outstanding Thiele-Small parameters, a must for precise loudspeaker evaluations. With a Vas value of 37 liters, the subwoofer offers an ideal balance between resonance and cabinet volume requirements. The Fs of 41 Hz characterizes the low resonance frequency, ensuring clean bass depth. The overall Qts of 0.71 and the mechanical voice Qms of 11 make it clear: The Hertz subwoofer shines with outstanding efficiency and excellent dynamics, ideal for use in seawater environments.

Mechanical and electrical properties of the Hertz HMS 10 BC

The HMS 10 BC features a moving mass of 69 g and a voice coil inductance Le of 0.9 mH, allowing for extremely precise control over the subwoofer and thus also over the sound. The impressive motion efficiency (Bl factor) of 10.2 T*m ensures that the subwoofer is highly sensitive and operates very effectively even with lower-power signals.

Highly resilient: Focus on materials and construction

The Hertz HMS 10 BC is designed for maximum resilience and durability. A polypropylene cone with UV inhibitors protects the subwoofer from harsh environmental influences such as UV rays and salt spray. The advanced aramid fiber spider, combined with a Santoprene surround, ensures outstanding performance throughout the speaker's lifetime.

Hertz corrosion-resistant brass subwoofer connectors

The terminals on the Hertz HMS 10 BC subwoofer are made of gold-plated, corrosion-resistant brass, enabling lossless signal transmission. These terminals are equipped with a silicone cap that further protects the connection from external influences—a crucial advantage for integrated use in marine environments.

Assembly details of the Hertz HMS 10 BC marine subwoofer

With a mounting depth of 191 mm, the Hertz subwoofer fits into many common marine applications, and the 50 mm diameter voice coil allows for considerable freedom of movement. These features, combined with a high-density flux ferrite magnet, contribute to exceptional sound quality, even in acoustically challenging environments.

Frequency response and sound pressure of the Hertz HMS 10 BC

The Hertz HMS 10 BC subwoofer has a frequency response perfectly suited for reproducing low frequencies. Its 88 dB sound pressure level ensures the subwoofer delivers excellent volume even at low input power. This combination delivers clear, intense bass that's impressive even outdoors.

Housing data and installation instructions for the Hertz Marine Subwoofer

The Hertz HMS 10 BC is optimized for installation in a sealed enclosure with a volume of 50 liters and a Qtc of 1.05, ensuring tight and precise bass reproduction. Its design and compact size allow you to integrate this subwoofer even into tight and space-critical scenarios. Adjust the enclosure dimensions according to the included panel cutting lists. For further information or if you need help with installation, Masori's on-site installation in Frankfurt (Oder) , the extensive expert support FAQ & Help and the comprehensive audio blog offer excellent resources.