Niobium rare earth ferroelectric transducer magnet</br>Polypropylene diaphragm</br>Freq. Resp. 5Khz to 25Khz</br>20W Tweeter</br>4-way mount tweeter</br>Niobium Rare Earth Ferroelectric Transducer Magnet</br>Polypropylene Diaphragm</br>Freq Resp: 5 Khz¿2 Khz</br></br>Product Description</br></br>Niobium rare earth ferroelectric transducer magnet. Polypropylene diaphragm. Freq. Resp. 5Khz to 25Khz. Swivel/surface/angle mount/flush mount. Built in Crossover.</br><br/>http://www.amazon.com/gp/product/B000P4ZKUG