20 cm (8) HiFi woofer with strong drive, extended rear pole plate and 35 mm voice-coil for high power handling. Highlights * High-value HiFi woofer * Super-low 30 Hz Fs and 0.33 Qts specifications * Deep bass in a moderate-sized enclosure Product Details Visaton W 200 S 8 HiFi Woofer 4 Ohm Visaton's W 200 S 8 woofer features a coated paper cone, durable rubber surround, and a bumped back plate to allow an excursion limit of ±10 mm. A balanced design approach between sensitivity, smooth frequency response (cross it over as high as 2,800 Hz), and extended bass allows this driver to be used as a woofer in two and three-way speaker systems or as a subwoofer.