Scan-Speak Classic 18W/4545-03 7" Woofer

The Scan-Speak Classic 18W/4545-03 7" Woofer represents a masterful blend of traditional materials and modern engineering, delivering accurate, low-distortion bass and midrange reproduction for discerning audio enthusiasts. This 7-inch paper cone driver is purpose-built for high-fidelity loudspeaker designs where clarity and musicality are paramount.

Ideal for use in two-way or three-way speaker systems, this woofer excels as a dedicated bass or mid-bass driver, seamlessly integrating into both ported and sealed enclosures. Its exceptional linearity makes it a superb choice for audiophile-grade bookshelf speakers, compact floor-standing designs, or as a dedicated midrange unit in multi-way configurations. Whether you are constructing a reference-quality stereo pair or upgrading an existing design, this driver delivers a natural, uncoloured sound signature.

Technically, the 18W/4545-03 features a paper cone membrane renowned for its lightweight stiffness and excellent damping properties, ensuring clean transient response and minimal breakup. With a linear excursion (Xmax) of 10mm, it handles substantial power while maintaining control. The total Q factor (Qts) of 0.27 indicates a well-damped alignment, ideal for tight, articulate bass. Sensitivity is rated at 90.2dB (1m/2.83V), and the 3.5-ohm DC resistance (Re) allows for efficient power transfer. A low voice coil inductance (Le) of 0.27mH further enhances high-frequency extension and detail.

In summary, the Scan-Speak Classic 18W/4545-03 is a precision-engineered woofer that combines classic paper cone warmth with modern low-distortion performance, making it an outstanding choice for serious loudspeaker projects.