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Scanspeak 12MU/4731T00 Midrange - Illuminator Range

Scanspeak 12MU/4731T00 Illuminator Midrange Unit - a radical rethink in drive unit design.

Illuminator logo

This 12cm Illuminator midrange unit is the culmination of many years research. Features include a cutting edge open chassis with airflow optimisation and an underhung Neodymium magnet system that is outrigged from the chassis - the combination of these advancements define new standards in terms of minimal compression & reflection.

With a text book response curve and extraordinary bandwidth of 100Hz-10KHz, this audiophile drive unit is an ultimate choice for high end 3 way systems and represents the very pinnacle of transparency and sound quality.

This is the 4 Ohm version - 8 Ohm version here: 12MU/8731T00

 Key Features:

    • Under-Hung Neodymium Motor Design
    • One Piece Cone-Dust Cap
    • Low-loss Linear Suspension
    • Patented Symmetrical Drive (SD-3)
    • Very Wide Frequency Response 100-10KHz
    • High Output 90dB @ 2,83V

    Basic parameters:

    Resonant frequency (fs) 64 Hz Nominal impedance (Zn) 4 Ω
    Mechanical  Q factor (Qms) 3.64 DC resistance (Re) 3.1 Ω
    Electrical Q factor (Qes) 0.26 RMS power handling 80 W
    Total Q factor (Qts) 0.24 Sensitivity (2.83V/1m) 90 dB
    Equivalent volume (Vas) 5.4L Chassis diameter 120 mm

    Here's the full datasheet:

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