The Infinity Kappa Rear speakers offer a robust audio experience tailored for car sound systems. Designed to enhance overall sound quality, these speakers feature a combination of advanced materials and technology. The Kappa series often incorporates a polypropylene woofer cone, allowing for better sound reproduction with a focus on clarity and performance. High-frequency response is generally handled by a silk dome tweeter, providing smooth treble performance. With a typical power handling rating ranging from 50 to 150 watts RMS, these speakers can handle a variety of music genres with ease. The impedance usually hovers around 2 to 4 ohms, making them compatible with a range of amplifiers and head units. Additionally, many users appreciate the coaxial design which allows for a more compact installation while still delivering dynamic sound. The frequency response usually spans from around 40 Hz to 20 kHz, thereby covering a broad spectrum of audio reproduction. The combination of these features aims to provide a balanced sound profile, suitable for both casual listening and more discerning audio setups.