Scanspeak 18WU/4747T00 Illuminator 18cm 4 Ohm woofer. A radical rethink in drive unit design.
This 18cm 4 Ohm woofer is the culmination of many years research at Scanspeak R and D, Videbaek, Denmark and brings together a host of advancements.
Featuring a rigid aluminium alloy cone, copper capped pole piece & huge linear excursion, this audiophile quality driver operates as a pure piston. The unique airflow optimised open chassis and underhung Neodymium SD-3 magnet system define new standards in terms of minimal compression & reflection.
Delivering highly accurate bass reproduction with great authority, extension and texture, we believe this is possibly the finest 18cm dedicated woofer available.
Available in 4 and 8 ohms.
Under-Hung Neodymium Motor Design
Black Anodised Aluminium Alloy Cone
Exceptionally Long Linear Excursion
Patented Symmetrical Drive (SD-3)
Low-loss linear suspension
This woofer is 4 Ohms ; the 8 Ohm version is here : 18WU/8747T00
Resonant frequency (fs)
Nominal impedance (Zn)
Mechanical Q factor (Qms)
DC resistance (Re)
Electrical Q factor (Qes)
RMS power handling
Total Q factor (Qts)
Equivalent volume (Vas)
Here's the full datasheet:
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