3. Car Mid-woofers
  5. Illuminator 18WU/8741T00

Illuminator 18WU/8741T00

80 Watt

Illuminator 18WU/8741T00

Technical Highlights

  • Power 80/150 W, impedance 8 Ohm, frequency range 28-3500 Hz.
  • Voice coil 42 mm, neodymium magnet, excursion +/9 mm.
  • Cone area 154 cm², resonant frequency 31 Hz, SPL 85.4 dB.
  • More technical details
€369.00
€369.00 €369.00
2% discount with credit card

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ProductIlluminator 18WU/8741T00

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datasheet
B2 AudioRage 8PWR
B2 Audio-Rage 8PWR-8" (20cm) Tiefmitteltöner-masori-kaufen
A close-up of a Scanspeak Automotive Gold 16W/4538G05 6.5 subwoofer with a black cone and red accents, shot against a white background.
Scanspeak AutomotiveGold 16W/4538G05
Two black and silver Scanspeak Illuminator 18WU/8741T00 speakers with Tiefmitteltöner rest on a white surface, angled to show their round cones and mounting rims.
€369.00
€369.00 €369.00

The Illuminator 18WU/8741T00 from Scanspeak is a 6.5" (16.5 cm) mid-woofer that stands out due to its advanced technology. With a patented underhung voice coil and a neodymium drive, it offers an exceptionally large linear displacement. Additionally, the mid-woofer impresses with low distortion reproduction thanks to copper caps and a low-loss linear suspension. Other features of the model include a power handling of 80/150 W and a frequency range of 28-3500 Hz. The symmetrical drive technology (SD-3) and the effective diaphragm area of 154 cm² complete the overall package.

Features
  • 6.5" (17cm) mid-woofer
  • Underhung voice coil with neodymium drive
  • Patented sandwich paper membrane/cone
  • Low-loss linear suspension
  • Patented symmetrical drive (SD-3)
  • Exceptionally large linear displacement

    Data
    • Power handling (rated/music) = 80/150 W
    • Frequency range = 28-3500 Hz
    • Resonance frequency fs = 31 Hz
    • Impedance R = 8 Ohm
    • Reference sound pressure SPL = 85.4 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 = 154 cm2
    • Moving mass incl. air load mms = 18 g
    • Equivalent volume Vas = 48.6 l
    • Free air total quality Qts = 0.33 (Qms=3.51, Qes=0.37)
    • Diameter of the voice coil = 42 mm
    • Linear displacement xlin = +/- 9 mm
    • Installation diameter d = 158 mm
    • Outer diameter d = 184 mm
    • Installation depth (not recessed) t = 105 mm

    datasheet

    Open data sheet

    Frequently Asked Questions about Illuminator 18WU/8741T00

    What are the performance specifications of the Scanspeak Illuminator 18WU/8741T00?

    The Scanspeak Illuminator 18WU/8741T00 offers an impressive power handling of 80 watts RMS and 150 watts music power. Its frequency range extends from 28 Hz to 3500 Hz, covering a wide range of tones. The resonance frequency is at 31 Hz, while the nominal sound pressure level is 85.4 dB (measured at 2.83V and 1m distance). The force factor BL is 7.5 N/A, which, along with the voice coil inductance of 0.41 mH, underpins the efficiency of the drive. The effective diaphragm area of 154 cm² also contributes to the excellent sound reproduction.

    How does the neodymium drive of the Scanspeak speaker affect performance?

    The neodymium drive of the Scanspeak Illuminator 18WU/8741T00 is crucial for its outstanding performance. The compact and strong magnetic structure of the neodymium achieves a higher driving force, allowing the mid-woofer to reach an exceptionally large linear excursion of +/- 9 mm. This improves bass reproduction and reduces distortion. Supported by the patented underhung voice coil, a more precise and controlled drive of the cone is enabled, directly leading to higher sound accuracy.

    What advantages does the patented sandwich paper diaphragm of the Scanspeak 18WU/8741T00 offer?

    The patented sandwich paper diaphragm of the Scanspeak 18WU/8741T00 is an essential component for excellent sound quality. This construction combines lightness with stiffness, allowing for improved control of diaphragm movement. This results in higher frequency accuracy, especially in the lower and mid-frequency range. The special structure minimizes unwanted resonances, ensuring a clear and natural sound. Supported by the symmetrical drive technology (SD-3), linearization effects are maximized, and the efficiency of the speaker is optimized.

    What does the symmetrical drive technology (SD-3) mean for the Scanspeak Illuminator?

    The symmetrical drive technology (SD-3) in the Scanspeak Illuminator 18WU/8741T00 significantly improves the linear movement of the voice coil. This technology ensures that the mechanical and electrodynamic forces are evenly distributed, leading to a reduction in distortion. This enables more precise sound reproduction across all frequency ranges. In conjunction with the neodymium drive and efficient suspension, the SD-3 drive offers superior control over the diaphragm movement, which is reflected in a clearly defined sound image.

    How does the low-loss linear suspension affect the sound quality of the Scanspeak speaker?

    The low-loss linear suspension of the Scanspeak 18WU/8741T00 plays a crucial role in sound reproduction by minimizing unwanted losses in diaphragm movement. This allows for a more efficient conversion of electrical energy into acoustic power. The suspension ensures stable and precise diaphragm movement, especially at high volumes, which expands the dynamic range of the speaker. In combination with the patented sandwich paper diaphragm and neodymium drive technology, consistent and high-quality sound is achieved across the entire frequency range.

    What are the installation dimensions of the Scanspeak Illuminator 18WU/8741T00?

    The Scanspeak Illuminator 18WU/8741T00 requires precise installation planning due to its specific dimensions. The installation diameter is 158 mm, while the outer diameter is 184 mm. An installation depth of 105 mm is needed, with no recess required. These dimensions are crucial to ensure optimal placement and integration of the speaker, especially in specific speaker enclosures or limited space conditions. Adhering to these dimensions ensures that the speaker can fully unleash its performance potential.

    What technical parameters define the bass performance of the Scanspeak 18WU/8741T00?

    The bass performance of the Scanspeak 18WU/8741T00 is defined by several technical parameters. The moving mass including air load is 18 g, which, in conjunction with the effective diaphragm area of 154 cm², allows for significant bass production. With an equivalent volume Vas of 48.6 l and a free-air total quality factor Qts of 0.33, ideal conditions for deep and rich bass are created. The powerful resonance frequency of 31 Hz complements this and, together with the strong neodymium drive, supports precise reproduction of bass frequencies.

    What role does the DC resistance play in the Scanspeak Illuminator?

    The DC resistance (Re) of the Scanspeak Illuminator 18WU/8741T00 is 5.9 Ohm and plays an important role in matching the speaker to various types of amplifiers. A balanced resistance value like this ensures that the speaker receives efficient energy transfer from the power source. This enhances overall acoustic performance and ensures stable and consistent playback quality. Together with the voice coil inductance of 0.41 mH, a balanced sound profile is provided.

    Which Thiele-Small parameters are relevant for the Scanspeak 18WU/8741T00?

    For the Scanspeak 18WU/8741T00, the Thiele-Small parameters are crucial for understanding the behavior of the speaker in closed or open enclosures. The free-air total quality factor Qts is 0.33, which allows for a good balance between bass depth and playback speed. The equivalent volume Vas of 48.6 l influences what enclosure volume is needed for optimal bass reproduction. The resonance frequency fs is at 31 Hz, which indicates a foundation for deep bass. These parameters are essential for tuning the speaker in various acoustic environments.

    How can the impedance of the Scanspeak 18WU/8741T00 be utilized?

    The impedance of the Scanspeak 18WU/8741T00 is 8 Ohm, which allows compatibility with many hi-fi systems and amplifiers. A properly matched amplifier ensures that the speakers operate in their optimal state. By adjusting the impedance, you can minimize distortion and maximize sound quality. In cases where multiple speakers are connected in parallel, the total resistance must be considered to meet the amplifier's power requirements and ensure protective measures.

    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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