Scan-Speak Illuminator 18WU/4741T00 7" Woofer

The Scan-Speak Illuminator 18WU/4741T00 7" Woofer represents a pinnacle of engineering for audiophiles seeking uncompromising bass performance. As part of the renowned Illuminator series, this driver is meticulously crafted to deliver deep, articulate low frequencies with exceptional control and precision. Whether you are designing a dedicated subwoofer system, a high-fidelity two-way bookshelf speaker, or a multi-way floor-standing loudspeaker, this woofer excels in reproducing the lowest octaves with authority and musicality, making it an ideal choice for critical listening environments and home theatre applications alike.

Technically, the 18WU/4741T00 is distinguished by its remarkably low 30 Hz resonance frequency (Fs) and a generous 9 mm linear excursion (Xmax), enabling it to produce deep, clean bass without distortion. The driver’s low total Q factor (Qts) of 0.29, combined with a high mechanical Q (Qms) of 3.56 and a low electrical Q (Qes) of 0.32, ensures tight, well-damped transient response suitable for sealed or ported enclosures. With a 4-ohm impedance, 87.2 dB sensitivity (1m/2.83V), and a 41.91 mm voice coil, it handles up to 15 watts of continuous power while maintaining a low 0.5 mH voice coil inductance for extended high-frequency clarity. The equivalent volume (Vas) of 49.27 litres and 3.2-ohm DC resistance further complement its design, making this woofer a superb foundation for any high-end audio project.