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  5. HMS 12 B4-LD-C

Hertz HMS 12 B4-LD-C 12" (30cm) Subwoofer

1 Review

500 Watt

Hertz HMS 12 B4-LD-C 12" (30cm) Subwoofer

1 Review

Technical Highlights

  • 500 W RMS power, 4 Ohm impedance, 12" (30 cm) subwoofer, high power handling.
  • Long linear travel, minimal distortion, 191 mm depth.
  • Dual color LED adjustment, 65.5 mm voice coil, high density magnet.
  • More technical details
€439,00
€439,00 €439,00
5% discount with prepayment
inkl. VAT , possibly plus shipping
Delivery
Mar 25, - Mar 28,
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HertzHMS 12 B2-LD-W
Hertz-HMS 12 B4-LD-C-12" (30cm) Subwoofer-masori-kaufen
€439,00
€439,00 €439,00

HMS 12 B4-LD-C by Hertz

As a renowned manufacturer of car and marine audio, Hertz presents the HMS 12 B4-LD-C, a powerful 12-inch marine subwoofer. This subwoofer is specifically designed for free-air applications and delivers deep, powerful bass without the need for a dedicated enclosure. Available in 2- or 4-ohm single voice coil versions, it features an impressive continuous power handling of 500 W. Additionally, the classic grille can be color-customized to your boat with built-in LEDs. The subwoofer is engineered for high-performance applications with undefined volume and offers long linear excursion for massive output with minimal distortion. This high-end audio device not only provides your system with booming bass but also relieves your main speakers.

Technical Data

  • Size mm 300
  • Power Handling - RMS W 500
  • Power Handling - Peak W 1000
  • Impedance Ohm 4
  • Depth mm 191
  • Single voice coil
  • Voice coil Ø 65.5
  • Magnet size W x D x H mm 156 x 80 x 40
  • Component weight kg 7.6
  • Magnet high-density flux ferrite
  • Cone polypropylene with UV inhibitors

Electro-Acoustic Specifications

  • D mm 300
  • Xmax mm 19
  • Re Ohm 1.8
  • Fs Hz 30
  • Le mH 0.41
  • Vas I 95.4
  • Mms g 114
  • Cms mm/N 0.225
  • BL T*m 8
  • Qts 1
  • Qes 1.1
  • Qms 11.1
  • Spl dB 89.5

Physical Specifications

HMS 12 B4-LD-C

  • The HM RGB 1 BK enhances your experience with multi-color LED lighting that can be adjusted to your mood or surroundings. Consists of an RGB CONTROLLER, specially designed for HMX LD option models, including a wireless remote control.

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Frequently Asked Questions about HMS 12 B4-LD-C

What impedance options does the Hertz HMS 12 B4-LD-C Marine Subwoofer offer?

The Hertz HMS 12 B4-LD-C Marine Subwoofer is available in two impedance options: the 2-ohm and the 4-ohm version. This selection provides versatile installation possibilities and compatibility with various amplifier configurations. Choosing the right impedance can significantly affect the load requirements and overall performance of the audio system. For example, if you operate an amplifier with a higher load, the 4-ohm version may be more suitable, while the 2-ohm version allows for higher current draw and is sensible for setups with multiple subwoofers. It is important to follow the amplifier-subwoofer matching rules to avoid overload.

What distinguishes the Free-Air application of the HMS 12 B4-LD-C?

The HMS 12 B4-LD-C from Hertz is specifically designed for Free-Air applications, meaning it can be operated without a conventional enclosure. This feature is particularly advantageous on boats, where space constraints are often an issue. The subwoofer unleashes its full potential, delivering deep, powerful bass without the need for a defined volume. This is made possible by the robust construction and high-quality materials that ensure high durability up to 500 watts RMS and impressive excursion capability. Such an application offers enormous flexibility in installation and integration into existing systems.

How is the LED lighting integrated into the Hertz HMS 12 B4-LD-C?

The Hertz HMS 12 B4-LD-C Marine Subwoofer features integrated LED lighting in the classic grille, allowing for visual adaptation to your ambient lighting. These LEDs are fully customizable, and the optional accessory HM RGB 1 BK provides additional control with a specially designed RGB controller and a remote control. This allows you to change the colors of the LEDs as desired and optimize them for different moods or occasions. The combination of powerful bass and customizable lighting makes the subwoofer a high-end device, both sonically and visually appealing, for boats of all kinds.

What are the technical specifications of the Hertz HMS 12 B4-LD-C regarding depth and size?

The Hertz HMS 12 B4-LD-C Marine Subwoofer has a depth of 191 mm, making it suitable for a variety of installation locations, especially in marine applications where space is often limited. The diameter is 300 mm, or 12 inches, which is a standard size for powerful subwoofers. These dimensions make the HMS 12 B4-LD-C an ideal choice for use in boats, where both compact size and high bass performance are required. The weight of a component is 7.6 kg, reflecting its robust construction, necessary for the special conditions on the water.

How do Thiele Small parameters affect the performance of the HMS 12 B4-LD-C?

The Thiele Small parameters such as resonance frequency (Fs) of 30 Hz and the total quality factor (Qts) of 1 contribute to the overall performance of the HMS 12 B4-LD-C. These parameters help predict how the subwoofer behaves in different applications. A Qts of 1 indicates that the subwoofer is optimized for free-air installations, while the low Fs of 30 Hz allows for deep bass output. The mechanical quality factor (Qms) of 11.1 and the electrical quality factor (Qes) of 1.1 influence the efficiency and sound of the subwoofer. Such detailed parameters assist the experienced technician in fine-tuning the system.

What material is used for the cone of the HMS 12 B4-LD-C and why?

The cone of the HMS 12 B4-LD-C Subwoofer is made of polypropylene, which is equipped with UV inhibitors. Polypropylene is known for its strength and resistance to moisture, making it an excellent choice for marine applications. The UV inhibitors protect the cone from harmful sun rays, which can be intense in the marine environment, preventing material degradation and discoloration. This material ensures that the subwoofer operates reliably even under harsh conditions and delivers consistent sound quality. The use of polypropylene cones is therefore particularly widespread and valued in the watersports sector.

How does the voice coil diameter affect the performance of the subwoofer?

The voice coil diameter of the HMS 12 B4-LD-C is 65.5 mm, which is crucial for durability and performance. A larger diameter supports better heat dissipation, which in turn allows for a higher continuous power handling of 500 watts RMS. This is especially important in strong bass applications where there is a risk of overheating. The larger voice coil also provides precise control of the cone and reduces distortion, especially at high volumes. This ensures that the subwoofer operates reliably and performs consistently even under demanding conditions.

What is the maximum linear excursion capability of the HMS 12 B4-LD-C and why is it important?

The maximum linear excursion, Xmax, of the HMS 12 B4-LD-C is 19 mm, highlighting the Subwoofer's ability to allow large diaphragm movements with minimal distortion. This specification is crucial for sound quality, as it ensures that the cone remains linear and precise even at high volumes, resulting in cleaner and distortion-free bass. Especially in open-air applications like on boats, a high excursion capability is advantageous to combat ambient noise while still producing powerful, deep bass sounds. This feature makes the Subwoofer particularly effective in challenging acoustic environments.

How is the integration of the HM RGB 1 BK accessory with the HMS 12 B4-LD-C done?

The HM RGB 1 BK accessory complements the HMS 12 B4-LD-C with a versatile RGB LED lighting option. This integration is made possible by an RGB controller specifically designed for the HMX LD models. Control is done via a convenient remote control that allows you to adjust the color display according to your mood or environment. This significantly enhances the aesthetic appearance of the Subwoofer on boats and can be installed quickly and easily. No complicated wiring is needed, as the system is specifically designed for integration with the Subwoofer. The accessory provides an impressive visual experience that harmonizes with the strong bass of the Subwoofer.

What frequency response specifications does the Hertz HMS 12 B4-LD-C have?

The frequency response of the Hertz HMS 12 B4-LD-C is remarkable, although the exact specifications are not detailed in the product description. However, it is designed to deliver powerful and deep bass in marine environments. Typically, Subwoofers in this category handle frequencies from about 20 Hz to 200 Hz to cover the lower range of the audio spectrum. The exact frequency response specification can be directly inquired from the manufacturer. Nevertheless, due to the unknown design and the focus on free-air installations, it is expected that the HMS 12 B4-LD-C will significantly enhance bass reproduction without additional enclosures.

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

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