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  5. LS104M
Rebec LS104M 4" (10cm) Midrange Speaker
SKU:  LS104M
40 Watt

LS104M

SKU:  LS104M

Technical Highlights

  • Rated power: 40W, maximum power: 80W, solid performance.
  • Nominal impedance: 4 ohms, frequency response: 100 Hz–8.5 kHz.
  • Voice coil: 30 mm, Sensitivity: 86.570 dB, BL: 5.321 T.
  • More technical details
€1.199,00
€1.199,00 €1.199,00
5% discount with credit card
inkl. VAT , possibly plus shipping
Delivery
Jun 9, - Jun 14,
x pair
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LS104M by Rebec

The LS104M from Rebec is a 4 inch midrange driver with a nominal power of 40 watts. The model has a nominal impedance of 4 Ohm and a maximum load capacity of 80 watts. The frequency response of the speaker covers the range from 100 Hz to 8.5 kHz. The voice coil has a diameter of 30 mm. With a sensitivity of 86.570 dB, the system is specified for audio installations. The technical parameters include an equivalent volume of 2.747 liters and a resonance frequency of 68.419 Hz.

Features
  • 4 inch (10 cm) midrange driver
  • Nominal power: 40 watts
  • Maximum power: 80 watts
  • Nominal impedance: 4 Ohm
  • Frequency response: 100 Hz–8.5 kHz
  • Voice coil diameter: 30 mm
  • Sensitivity: 86.570 dB
  • Vas: 2.747 liters
Technical Data
  • Revc: 3.6 Ohm
  • Fo: 68.419 Hz
  • Sd: 44.179 cm²
  • Krm: 1.935 m Ohm
  • Erm: 0.736
  • Kxm: 4.860 m H
  • Exm: 0.669
  • Cms: 991.247 u M/N
  • Mmd: 5.290 m Kg
  • Mms: 5.459 g
  • BL: 5.321 T
  • Qms: 3.004
  • Qes: 0.298
  • Qts: 0.271
  • No: 0.285 %

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Rebec LS104M Datasheet

Open datasheet

Frequently Asked Questions about LS104M

What performance does the LS104M from Rebec offer?

The LS104M midrange driver from Rebec has a rated power of 40 watts and can reach a maximum power of 80 watts. These power specifications allow for solid performance across a wide range of applications. With a nominal impedance of 4 ohms and a frequency response of 100 Hz to 8.5 kHz, it efficiently covers essential music frequencies. The voice coil diameter is 30 mm, contributing to high power and sound quality. With a sensitivity of 86.570 dB, it achieves good efficiency, resulting in precise sound output at varying volumes.

What is the frequency response of the LS104M midrange driver?

The frequency response of the Rebec LS104M ranges from 100 Hz to 8.5 kHz, making it a versatile midrange driver for various audio applications. Within this range, both low and high sound frequencies are covered, allowing for harmonious sound reproduction. The Revc of 3.6 ohms and the Qts of 0.271 also contribute to high-quality acoustics. This allows the midrange driver to seamlessly interact with other speaker types to create a comprehensive acoustic experience that meets many demands outstandingly.

What are the dimensions of the LS104M from Rebec for installation?

The LS104M from Rebec measures 4 inches, which is about 4 inches in diameter, making it suitable for various audio applications or vehicle installations. With an Sd of 44.179 cm², it provides optimal resonance surfaces and a balanced sound. Installation should be done carefully in the designated area, ensuring sufficient space to secure proper fitting in enclosures or doors. Precise knowledge of the installation space is essential to unleash the full acoustic output and avoid distortion in sound propagation.

What specific technical parameters does the LS104M have?

The LS104M from Rebec features impressive technical parameters, including a Fo of 68.419 Hz and an Erm of 0.736, contributing to the stability of the driver. The combination of Vas of 2.747 liters and a Qes of 0.298 results in a tasteful sound experience. The Mms of 5.459 g demonstrates excellent material implementation, while the BL value of 5.321 T highlights the electromechanical force. All these values contribute to the outstanding sound quality and flexibility that the LS104M can maintain at various volumes and applications.

What is the efficiency of the LS104M from Rebec?

The LS104M from Rebec boasts a remarkable efficiency with its sensitivity of 86.570 dB, ensuring efficient conversion of electrical to acoustic energy. This enables it to generate a clear, powerful sound even at low input voltage. The No value of 0.285% reflects the excellent efficiency and performance. Combined with a nominal impedance of 4 Ohms and the unique design of the driver, this achieves optimal sound for passionate music enthusiasts who appreciate sound quality.

What sound quality does the LS104M midrange driver offer?

The Rebec LS104M delivers an impressive sound performance with a frequency response of 100 Hz to 8.5 kHz. The Thiele-Small parameters Qms (3.004) and Qts (0.271) positively influence the tonal character, reproducing both low and high frequencies sharply and precisely. With a sensitivity of 86.570 dB and a BL of 5.321 T, an expressive sound formation is possible, showing minimal distortion even at high volumes. Its construction allows for a clear and balanced sound, ideal for fine musical details.

What is the resonance frequency of the LS104M midrange driver?

The resonance frequency (Fo) of the LS104M midrange driver from Rebec is 68.419 Hz. This value is versatile in the construction world and allows the midrange driver to efficiently process frequencies beyond the resonance limit while producing clear, undistorted tones. The ratio between dynamic masses like Mmd (5.290 m Kg) and the spring constant Cms (991.247 u M/N) ensures a dynamic sound progression across various frequency outputs. This technical balancing allows for a solid yet precise sound output within the covered frequency range.

Which materials influence the sound quality of the LS104M from Rebec?

The LS104M midrange driver from Rebec benefits in its acoustic performance from high-quality material components, such as a voice coil diameter of 30 mm, which improves thermal and mechanical resilience. Mms of 5.459 g and Sd of 44.179 cm² provide information about the mass-related acoustic performance. Solid constructions, combined with optimally chosen magnetic and mechanical components, promote the broad-band output of individual sound colors, making it particularly desirable for high-quality audio applications and thus offering a solution for demanding sound reproduction.

What parameters make the LS104M versatile for audio applications?

The LS104M midrange driver from Rebec has a high versatility with 4 Ohms and a frequency response of 100 Hz to 8.5 kHz. The parameters Revc (3.6 Ohms) and Exm (0.669) complement this with excellent electromagnetic compatibility, while the excellent processing in Qes (0.298) and Qms (3.004) increases the compatibility with other audio systems. With Vas of 2.747 liters and Sd of 44.179 cm², it achieves remarkable acoustic balance. Such technical features make it a flexible module for different speaker configurations in high-quality sound systems.

How does impedance contribute to the performance of the LS104M?

The LS104M from Rebec has a nominal impedance of 4 Ohms, which ensures efficient energy conversion and outstanding performance. This impedance harmonizes with a Revc of 3.6 Ohms and positively influences the performance of the midrange driver through reduced power loss. Combined with a sensitivity of 86.570 dB and a Kxm of 4.860 mH, high acoustic precision is ensured. As an integral element in audio systems, the LS104M adapts to the acoustic requirements of different environments and achieves optimal volume results within those specific setups.

Manufacturer information / responsible person

Elofssons Försäljnings AB
Björn Elofsson
Gruvgatan 31A
421 30 Västra Frölunda / Gothenburg
Sweden

Contact: support@dbakuten.se

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