HMS 10 B4-LD-W

Technical Highlights

Power 250W RMS, 500W Peak, impedance 4 Ohm, Ø50mm voice coil.
Polypropylene cone, UV-resistant, FEM-optimized mobile devices.
Aramid fiber spider, silicone insulation, high density flux ferrite magnet.
More technical details

€313,65

-15% ~~€369,00~~ €313,65

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Datasheet

Hertz-HMS 10 B4-LD-W-10" (25cm) Subwoofer-masori-kaufen

€313,65

~~€369,00~~ €313,65

Hertz HMS 10 B4-LD-W is a 10-inch (25 cm) Subwoofer with 4 Ohm impedance and single voice coil. The RMS power is 250 W, and the peak power is 500 W. It features a 50 mm voice coil, FEM-optimized mobile unit with high excursion, and a massive magnet group in a marine-grade injected polymer basket. The diaphragm is made of polypropylene with UV inhibitors and a combined Santoprene surround, aramid fiber spider with silicone-insulated connection wires. Gold-plated, corrosion-resistant brass terminal connectors with silicone caps. Xmax 12.3 mm, Xmech ±19 mm, depth 191 mm, size 250 mm, weight 5.1 kg. Designed for infinite baffle applications and tested for UV, salt mist, vibrations, splash water, temperature shock, and dust.

Features

10-inch (25 cm) Subwoofer
Impedance 4 Ohm
Single voice coil
RMS power 250 W
Peak power 500 W
Voice coil Ø 50 mm
Installation depth 191 mm
Size 250 mm
Diaphragm polypropylene with UV inhibitors
Combined Santoprene surround
Magnet flux ferrite with high density
Marine-grade injected polymer basket
Aramid fiber spider with silicone-insulated connection wires
Gold-plated, corrosion-resistant brass terminal connectors with silicone caps
Designed for infinite baffle
Resistant to UV, salt mist, vibrations, splash water, temperature shock, and dust
Mounting hole 230 mm

Technical Specifications

Depth 191 mm
Voice coil Ø 50 mm
Magnet size 140 x 60 x 30 mm
Weight 5.1 kg
Xmech ±19 mm
D 210 mm
Xmax 12.3 mm
Re 2.1 Ohm
Fs 43 Hz
Le 0.46 mH
Vas 30.46 l
Mms 75.6 g
Cms 0.18 mm/N
BL 8.3 T*m
Qts 0.6
Qes 0.63
Qms 12.3
SPL 88.5 dB
Physical specifications: A 277 mm, B 230 mm, C 191 mm, D 145 mm, F 46 mm
Sealed box (compact): Vb 50 l; Fb 54 Hz; Qtc 1.05; B 440 mm; H 440 mm; T 365 mm; Mounting hole 230 mm; Wood thickness 19 mm
Panel cut (compact): A 440 x 440 mm (2), B 440 x 327 mm (2), C 402 x 327 mm (2)
Sealed box (performance): Vb 71 l; Fb 51 Hz; Qtc 0.99; B 460 mm; H 460 mm; T 450 mm; Mounting hole 230 mm; Wood thickness 19 mm
Panel cut (performance): A 460 x 460 mm (2), B 460 x 412 mm (2), C 422 x 412 mm (2)

Frequent Questions about HMS 10 B4-LD-W

What power does the HMS 10 B4-LD-W Subwoofer from Hertz offer?

The HMS 10 B4-LD-W Subwoofer from Hertz is designed for an RMS capacity of 250 watts, while the peak power reaches an impressive 500 watts. These power specifications allow the subwoofer to produce high sound pressure levels, ensuring excellent bass reproduction. The combination of a single coil design and a high-density ferrite magnet ensures perfect control and precise sound reproduction even under demanding conditions. Especially in open environments, it impresses with its efficiency and performance.

How robust is the HMS 10 B4-LD-W against environmental influences?

The HMS 10 B4-LD-W from Hertz is extremely resistant to various environmental influences thanks to its high-quality materials. It withstands UV rays, salt mist, vibrations, water spray, thermal shock, and dust. These resistances make it ideal for applications in marine environments, where conventional speakers quickly reach their limits. The robust design ensures that the subwoofer maintains its functionality and sound quality even under extreme conditions, which is particularly beneficial for boat owners.

What physical properties does the HMS 10 B4-LD-W have and what significance do they have?

The HMS 10 B4-LD-W has compact dimensions of 250 mm in size and a depth of 191 mm, allowing for versatile installation. Weighing 5.1 kg ensures that the unit remains stable in its position and operates with low resonance. Its robust housing, measuring 440 x 440 mm with a wood thickness of 19 mm, additionally ensures that the sound produced remains free from cabinet resonances, while the polymer housing provides protection against the demands of the marine environment.

What Thiele-Small parameters does the Hertz HMS 10 B4-LD-W have?

The HMS 10 B4-LD-W Subwoofer has the following Thiele-Small parameters: Its re-impedance is 2.1 ohms, while the resonance frequency (Fs) is at 43 Hz. The equivalent volume (Vas) is 30.46, which, in conjunction with an effective diameter (D) of 210 mm, allows for efficient deep bass reproduction. Its mechanical displacement (Xmax) is 12.3 mm. Other electromechanical values such as Qts of 0.6 and BL of 8.3 T*m ensure a balanced and powerful bass reproduction.

What is the cabinet configuration of the HMS 10 B4-LD-W?

The HMS 10 B4-LD-W Subwoofer is particularly suitable for sealed box applications. For a compact enclosure, a volume of 50 liters (1.77 cu.ft.) is required at a resonance frequency (Fb) of 54 Hz. For larger enclosures, the recommended volume is 71 liters (2.51 cu.ft.) with a lower Fb of 51 Hz. This adaptability ensures optimal performance in varying space availability and sound preferences. The recommended wood thickness for the enclosure is 19 mm, and the specific panel cutting measures are provided in detail.

What materials are used in the HMS 10 B4-LD-W and why?

The Hertz HMS 10 B4-LD-W uses a combination of durable materials specifically designed for harsh conditions. The cone is made of polypropylene treated with UV inhibitors to minimize sun damage. The progressive aramid fiber spider, combined with silicone-insulated connection wires, ensures long life and consistent performance. The magnet is made of high-density flux ferrite, which, along with a polymer-encapsulated basket, ensures structural integrity even under the most demanding marine conditions.

How is the voice coil of the HMS 10 B4-LD-W designed?

The voice coil of the HMS 10 B4-LD-W by Hertz is designed as a single voice coil with a diameter of 50 mm. This design allows it to handle significant output power while optimally controlling the movements of the cone. Its construction is FEM-optimized, meaning it has been designed using finite element methods to maximize efficiency and longevity even at high sound pressure levels. The voice coil helps maintain the structural integrity and sound fidelity of the Subwoofer.

What special design features does the HMS 10 B4-LD-W have?

The HMS 10 B4-LD-W from Hertz features a number of special design elements, including a FEM-optimized mobile unit for high excursions and a massive magnetic group for improved performance. The injected basket is made from marine-grade polymer material that is both structurally stable and weather-resistant. Gold-plated brass terminal connectors, which are corrosion-resistant and have a silicone cap, protect the connection point from environmental influences. All these design elements contribute to the exceptional performance of the device.

What electro-acoustic specifications does the Hertz HMS 10 B4-LD-W offer?

Electro-acoustically, the HMS 10 B4-LD-W offers specified characteristics such as a total excursion (Xmech) of ±19 mm, a maximum mechanical displacement (Xmax) of 12.3 mm, and a sensitivity (Spl) of 88.5 dB. Its inductance (Le) is 0.46 mH, while the moving mass (Mms) reaches 75.6 g. Dynamic parameters such as the compliance (Cms) of 0.18 mm/N and the mechanical quality (Qms) of 12.3 make the system efficient and well-suited for different bass requirements. The Qes value of 0.63 also supports a fine balance between electrical and acoustic efficiency.

How do I install the Hertz HMS 10 B4-LD-W in my boat?

When installing the HMS 10 B4-LD-W from Hertz, one should focus on the installation dimensions and the specific environment on board the boat. The Subwoofer installation depth is 191 mm, and the mounting diameter is 277 mm. It is important that the mounting occurs in a suitable location that promotes air circulation and sound transmission. The enclosure should be built with a minimum volume of 50 liters depending on the desired sound profile. Secure mounting is essential to avoid unwanted vibrations and interference with sound reproduction.

Manufacturer information / responsible person

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