Scan-Speak Discovery 18W/4434G00 Midwoofer

The Scan-Speak Discovery 18W/4434G00 7" Midwoofer represents a superb choice for audio enthusiasts seeking to elevate their loudspeaker designs. This driver excels at delivering both articulate midrange frequencies and robust, controlled bass, making it an ideal foundation for two-way or multi-way speaker systems. Whether you are constructing a high-fidelity bookshelf speaker, a dedicated centre channel, or a refined subwoofer for a compact enclosure, this unit offers the versatility and performance required to achieve a natural, immersive soundstage.

Engineered with a rigid glass fibre cone and a durable rubber surround, the midwoofer ensures low distortion and excellent transient response across its operating range. The ferrite magnet motor system, combined with a 4-ohm impedance and a sensitivity of 91.5dB (2.83V/1m), provides efficient power handling and dynamic output. Key technical parameters include a total Q factor (Qts) of 0.35, a mechanical Q (Qms) of 7.81, and an electrical Q (Qes) of 0.37, which together indicate a well-damped driver suitable for sealed or ported alignments. With a maximum linear excursion (Xmax) of 4.3mm and a voice coil inductance (Le) of just 0.39mH, this driver maintains clarity even at higher volumes. The 177.8mm nominal diameter and 3-ohm DC resistance (Re) further complement its design, while the maximum power handling of 17 watts ensures reliable operation in carefully matched systems. For builders who demand precision and musicality, the Discovery 18W/4434G00 is a compelling choice.