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  3. Deep midrange driver for high volume
  5. VO-M408-S4
DD Audio VO-M408-S4 8" (20cm) Mid-Woofer
SKU:  VO-M408-S4

1 Review

250 Watt

VO-M408-S4

SKU:  VO-M408-S4

1 Review

Technical Highlights

  • Power of 250 Watts RMS, impedance of S4, VCD 2 inch.
  • Frequency range between 80 and 15,000 Hz, resonance frequency 94 Hz.
  • Sensitivity 97 dB, BL force factor 7.5 TM, Xmax 5 mm.
  • More technical details
€99,00
€99,00 €99,00
5% discount with credit card
inkl. VAT , possibly plus shipping
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Jun 9, - Jun 14,
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€99,00
€99,00 €99,00

VO-M408-S4 by DD Audio

The VO-M408-S4 from DD Audio is a mid-bass speaker with a diameter of 8 inches (20 cm). The RMS power of this speaker is 250 watts. It has an impedance of S4 and a voice coil diameter of 2 inches. The frequency range is specified as 80 to 15,000 Hz, while the resonance frequency is at 94 Hz. The sensitivity is 97 dB SPL and the force factor BL is 7.5 TM. For installation, a diameter of 183 mm and a depth of 98 mm are required. The maximum displacement is 5 mm with an equivalent volume of 17.45 liters.

Features
  • 8 inches (20 cm) mid-bass speaker
  • Power: 250 watts RMS
  • Impedance: S4
  • Voice coil diameter: 2 inches
  • Equivalent volume: 17.45 liters
  • Installation diameter: 183 mm
  • Installation depth: 98 mm
  • Maximum displacement: 5 mm
Technical Specifications
  • Frequency range: 80 – 15,000 Hz
  • Resonance frequency: 94 Hz
  • Sensitivity: 97 dB SPL
  • Force factor: 7.5 TM
  • Qms: 11.74
  • Qes: 0.49
  • Qts: 0.47

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Frequently Asked Questions about VO-M408-S4

What are the technical specifications of the DD Audio VO-M408-S4 speaker?

The DD Audio VO-M408-S4 speaker features an 8-inch speaker size and an RMS power of 250 watts. With an impedance of S4, a voice coil diameter of 2 inches, and a frequency range of 80 to 15,000 Hz, it offers versatile application possibilities. The resonance frequency (Fs) is 94 Hz, indicating precise vocal reproduction. Other specifications include a Qms of 11.74, Qes of 0.49, and Qts of 0.47, all of which influence the efficiency and dynamics of the speaker. The high sensitivity of 97 dB promises powerful playback.

How should the installation of the VO-M408-S4 speaker be evaluated regarding dimensions?

The integration of the VO-M408-S4 speaker requires specific dimensions. The cutout diameter is 183 mm, while the mounting depth is 98 mm. These measurements are crucial for a proper fit and optimal performance. Note that the speaker is a sensitive component and requires precise installation. Ignoring these specifications could lead to issues with sound quality. Always check the available space in your vehicle or speaker system to ensure that a flawless installation is possible.

What frequency range is covered by the VO-M408-S4?

The VO-M408-S4 covers a frequency range from 80 Hz to 15,000 Hz. This wide coverage allows for playback of deep bass frequencies to clear high tones. The speaker is ideal for users who prefer music with powerful bass as well as detailed highs. While the lower frequency range ensures solid bass performance, the high frequencies provide clarity and precision. These features make it versatile for use in cars or home speaker systems.

What role does the force factor BL play in the VO-M408-S4 speaker?

The BL factor measured at 7.5 TM for the VO-M408-S4 speaker describes the efficiency of the magnetic drive of the voice coil. This value affects the control and responsiveness of the diaphragm movement. A higher BL value means that the diaphragm reacts faster and with more precision to audio signals, resulting in clearer sound quality. Especially at high power, such as the 250 watts RMS of the VO-M408-S4, this factor is crucial for dynamic playback, particularly with music featuring strong bass rhythms or fast transients.

What does the sensitivity of 97 dB SPL mean for the VO-M408-S4?

With a sensitivity of 97 dB SPL, the VO-M408-S4 speaker is capable of producing more volume from a given input power. This high sensitivity is particularly advantageous in applications where amplifier power is limited. It means that the speaker requires less power to produce a loud output, making it ideal for systems that rely on energy efficiency. This is especially important if you want to use the speaker in a car installation system, where energy-saving measures can be crucial.

What is the maximum displacement (Xmax) of the VO-M408-S4 and why is it important?

The maximum displacement (Xmax) of the VO-M408-S4 is 5 mm, which describes the maximum movement of the diaphragm in one direction without losing the linearity of sound reproduction. A higher Xmax means that the speaker can produce greater volumes without distortion. This feature is crucial when playing bass-heavy music tracks, where large diaphragm displacements are required to reproduce low frequencies cleanly and powerfully. Make sure that the speaker is mounted in a cabinet that provides sufficient space for these movements.

How do the Thiele Small parameters of the VO-M408-S4 affect its performance?

The Thiele Small parameters of the VO-M408-S4, such as Qms, Qes, and Qts, are essential for understanding the overall performance of the speaker. Qms with a value of 11.74 describes the mechanical quality of the speaker system. The Qes of 0.49 defines the electrical quality. Combined, this results in a Qts of 0.47, which represents the overall quality. These values allow designers to calculate the ideal enclosure for the speaker. Important for tuning to the desired sound characteristics, they influence aspects such as efficiency, resonance frequency, and power output.

What is the equivalent volume (Vas) of the VO-M408-S4 speaker?

The VO-M408-S4 has an equivalent volume (Vas) of 17.45 liters. Vas is a key parameter that describes the volume of a theoretical airtight box that has the same acoustic suspension value as the speaker diaphragm. It helps determine the optimal enclosure volume for the speaker. In practice, a larger Vas means that the speaker is generally suited for larger enclosures. A properly tuned enclosure maximizes bass reproduction and overall sound quality by optimizing the resonance frequency and controlling diaphragm movement.

What tips are there for installing the VO-M408-S4 in a car?

Before you install the VO-M408-S4 in a vehicle, ensure that the intended space accommodates the installation diameter of 183 mm and the installation depth of 98 mm. These measurements are crucial for ensuring a hassle-free installation. Make sure the speaker is securely mounted to minimize vibrations. Proper positioning is essential for optimal sound reproduction. If possible, use pre-made adapters or sealed enclosures to enhance bass reproduction. Paying attention to these points will significantly improve sound quality and long-term stability.

What sound advantages does the VO-M408-S4 offer at high RMS power?

The high RMS power of 250 watts of the VO-M408-S4 allows for music playback at high volumes without loss of quality. This is ideal for situations where you want to enjoy loud music, such as at outdoor events or in the car. The interplay of RMS power and other performance data, such as the sensitivity of 97 dB and the impedance of S4, provides you with excellent efficiency and volume. The speaker can dynamically and precisely reproduce powerful bass and detailed highs, creating an impressive soundscape without causing distortion.

Manufacturer information / responsible person

Audio Import Group
Pekka Kinnunen
Palkkitie 10
84100 Ylivieska
Finland

Contact: info@audioimport.fi

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