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Scanspeak 18WU/4741T00 Midwoofer - Illuminator Range

Scanspeak 18WU/4741T00 Illuminator 18cm 4 Ohm Bass / Midrange.

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This Illuminator 18cm 4 Ohm midwoofer is a highly advanced unit featuring some very forward thinking technology. The unique alloy chassis is open and has been optimised for maximum airflow with minimum reflection / sound disturbance; the underhung Neodymium magnet is outrigged from the chassis and the spider is completely open on both sides - these advancements give excellent sound characteristics with no compression.  All of the Illuminator midwoofers have a prodigious, deep bass response.

Featuring a unique patented long fibre cone, copper capped pole piece & huge linear excursion, this audiophile drive unit is at the very pinnacle of sound quality and design.

Available in 4 and 8 Ohm impedance.

 Key Features:

    • Under-Hung Neodymium Motor Design
    • Patented Sandwich Paper Cone
    • Low-loss linear suspension
    • Patented Symmetrical Drive (SD-3)
    • Exceptionally Long Linear Excursion

    This woofer is 4 Ohms ; the 8 Ohm version is here : 18WU/8741T00

    Basic parameters:

    Resonant frequency (fs) 30 Hz Nominal impedance (Zn) 4 Ω
    Mechanical  Q factor (Qms) 3.56 DC resistance (Re) 3.2 Ω
    Electrical Q factor (Qes) 0.32 RMS power handling 80 W
    Total Q factor (Qts) 0.29 Sensitivity (2.83V/1m) 87.2 dB
    Equivalent volume (Vas) 49.4L Chassis diameter 184 mm

    Here's the full datasheet:

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