This is a great upgrade for cabinets with harsh and thin sounding tweeters and perfect for replacing a blown one. I'm asking $30 shipped. From the website: "1" phenolic dome compression driver (tweeter), specially designed to offer a smooth extended frequency response over a broad band, from mids to highs, with very high efficiency. Ideal for compact two- and three way systems which require uncompromising performance with high power output and superb frequency response. It also features a compact 4" x 4" ABS horn lens. Power handling: 75 watts RMS/105 watts max (conservative, with recommended crossover at 4 kHz). Voice coil diameter: 1". Impedance: 8 ohms. Frequency response: 1,500-18,000 Hz * SPL: 107 dB 1W/1m. Dimensions: 4" W x 4" H x 4-3/4" D."