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  5. Illuminator 15WU/8741T00

Illuminator 15WU/8741T00

80 Watt

Illuminator 15WU/8741T00

Technical Highlights

  • Power: 80/150 W, Impedance: 8 ohms, Frequency: 30-3500 Hz.
  • Resonant frequency: 35 Hz, SPL: 83.4 dB, Sd: 92 cm², BL: 7.5 N/A.
  • Voice coil: 42 mm, mms: 12.3 g, Qts: 0.26, xlin: +/9 mm.
  • More technical details
€359.00
€359.00 €359.00
2% discount with credit card

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ProductIlluminator 15WU/8741T00

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datasheet
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Two Scanspeak Illuminator 15WU/8741T00 black and silver round speakers with Sandwich-Papier Membran, shown at an angle on a white background.
€359.00
€359.00 €359.00

The Illuminator 15WU/8741T00 from Scanspeak is a 5" (13cm) Mid-Woofer that impresses with special features. It has an underhung voice coil with neodymium drive, which, along with copper caps, ensures very low distortion. A patented sandwich paper diaphragm and a low-loss linear suspension complement the system. The exceptionally large linear displacement and the patented symmetrical drive (SD-3) also contribute to excellent performance. This makes it an outstanding choice for precise sound experience.

Features
  • 5.25" (14cm) Mid-Woofer
  • Underhung voice coil with neodymium drive
  • Patented sandwich paper diaphragm/cone
  • Low-loss linear suspension
  • Patented symmetrical drive (SD-3)
  • Exceptionally large linear displacement

    Data
    • Power handling (rated/music) = 80/150 W
    • Frequency range = 30-3500 Hz
    • Resonance frequency fs = 35 Hz
    • Impedance R = 8 Ohm
    • Reference sound pressure SPL = 83.4 dB (2.83V; 1m)
    • DC resistance Re = 5.9 Ohm
    • Force factor BL = 7.5 N/A
    • Voice coil inductance L = 0.41 mH
    • Effective diaphragm area Sd = 92 cm2
    • Moving mass incl. air load mms = 12.3 g
    • Equivalent volume Vas = 19.9 l
    • Free air total quality Qts = 0.26 (Qms=3.37, Qes=0.28)
    • Diameter of the voice coil = 42 mm
    • Linear displacement xlin = +/- 9 mm
    • Installation diameter d = 123 mm
    • Outer diameter d = 149 mm
    • Installation depth (not recessed) t = 97.5 mm

    datasheet

    Open data sheet

    Frequently Asked Questions about Illuminator 15WU/8741T00

    What are the main features of the Scanspeak Illuminator 15WU/8741T00?

    The Scanspeak Illuminator 15WU/8741T00 is a 5.25-inch mid-woofer with an underhung voice coil, supported by a powerful neodymium drive. This combination ensures extremely low distortion. The patented sandwich paper diaphragm and the low-loss linear suspension enhance acoustic precision. The symmetrical SD-3 drive and the large linear excursion are also notable features. Together, these features allow for a high power handling of 80/150 W (rated/music) and a frequency range of 30-3500 Hz. Crucial for sound purists who appreciate accurate listening.

    How does the underhung voice coil affect performance?

    The underhung voice coil in the Illuminator 15WU/8741T00 plays a critical role in the speaker's playback quality. This design, combined with the neodymium drive, ensures that the voice coil operates efficiently within the magnetic field and significantly reduces distortion. Additionally, the copper cap construction provides lower inductance and optimizes responsiveness at the crossover frequencies. This allows the mid-woofer to reproduce demanding musical passages with a clarity and precision often unattainable by conventional voice coil designs. Ideal for demanding listening environments.

    What is the linear excursion and why is it important?

    The linear excursion of the 15WU/8741T00 is an impressive +/- 9 mm. Such a large linear excursion is crucial for ensuring high fidelity and low distortion, even at high volumes. This technical characteristic allows the speaker to handle larger fluctuations in air pressure without compromising sound quality. In practice, this means undistorted, powerful bass reproduction and precise midrange imaging, even when the speaker is pushed to its limits.

    What role does the patented sandwich paper diaphragm play?

    The patented sandwich paper membrane of the Scanspeak Illuminator significantly contributes to the high quality of sound reproduction. This membrane structure provides the necessary stiffness to reproduce sound accurately while also having some flexibility for adequate damping of unwanted vibrations, including resonances. This balance leads to improved sound clarity across the entire frequency range of 30 to 3500 Hz. The result is a natural sound experience that is particularly noticeable with complex musical pieces and sets the speaker apart from less sophisticated models.

    What technical parameters influence frequency reproduction?

    The frequency reproduction of the speaker from 30 Hz to 3500 Hz is influenced by several technical parameters. The nominal sound pressure of 83.4 dB ensures sufficient volume sensitivity at standard amplifier power levels. The resonance frequency is at 35 Hz, allowing for strong bass reflection. The effective diaphragm area of 92 cm² and the moving mass including air load of 12.3 g further contribute to defined sound radiation. All these parameters work synergistically to ensure a balanced, wide frequency coverage that performs well in various listening situations.

    How do impedance and DC resistance affect sound?

    The Illuminator 15WU/8741T00 has an impedance of 8 Ohm, which contributes to compatibility with a variety of amplifiers and allows for stable power distribution. The DC resistance is 5.9 Ohm, indicating efficient power intake. These parameters are important because they affect the electrical load and responsiveness of the speaker. A balanced ratio ensures that the speaker operates dynamically and distortion-free across different frequencies and volume levels, which is crucial for an audiophile listening experience.

    What advantages does the symmetrical drive (SD-3) offer?

    The patented symmetrical drive, known as SD-3, in the Scanspeak Illuminator 15WU/8741T00 offers significant advantages in sound reproduction. This drive technology reduces asymmetries in the motion guidance and allows for precise control of diaphragm movement. This minimizes distortion, which is particularly evident with complex musical materials. The even power distribution ensures a more natural-sounding output and improves radiation behavior. A symmetrical drive thus offers the potentially best solution for those who value accurate music reproduction.

    What tips are there for installing the 15WU/8741T00?

    When installing the Scanspeak Illuminator 15WU/8741T00, it is important to consider the dimensions carefully. The cutout diameter is 123 mm, the installation depth is 97.5 mm, and the outer diameter is 149 mm. Make sure that the mounting cavity adheres to these dimensions exactly to ensure a smooth installation. Due to the high technical demands, it is advisable to mount the speaker in a low-vibration environment to fully exploit the acoustic advantages. This precision in installation contributes to achieving the best possible sound quality.

    How does the frequency range of 30-3500 Hz work in practice?

    The frequency range of 30 to 3500 Hz in the Scanspeak Illuminator 15WU/8741T00 ensures that the speaker covers both low and mid frequencies with ease. At low frequencies around 30 Hz, you benefit from powerful deep bass, while the mids at 3500 Hz ensure clear voice and instrument reproduction. Especially if you enjoy listening to music loudly or your audio setup is designed for a variety of music styles, this speaker transmits frequencies with clarity and detail. This breadth of frequency spectrum is a significant advantage for comprehensive sound experiences.

    What influence does the moving mass have on the sound characteristic?

    The moving mass, including air load, is 12.3 g for the Scanspeak Illuminator. A low moving mass is crucial for the speed and precision with which the speaker influences the response behavior. The lower the moving mass, the easier it is for the speaker to respond to fast impulses and reproduce dynamics and details. This contributes to frequency fidelity and improved transient response, which is especially advantageous in complex musical passages. The lower moment of inertia also leads to a dynamic sound image that remains lively and detailed.

    Manufacturer information/responsible person

    Audio Components B.V.
    Koen Pronk, Martijn Ouwerkerk
    Peizerweg 97a
    9727AJ Groningen
    Netherlands

    Contact: info@audio-components.com

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