Clear, detailed high frequency response for car and home audio - Performance you can hear: 5.1 cm horn tweeters designed for auto sound systems, delivering a broad frequency range from 2000 Hz to 20000 Hz for clearer, more articulate highs in your HI FI setup. - Practical compatibility: 4 Ohm impedance and 15 W power rating make these tweeters suitable for both home audio and car installations, providing stable operation and strong high frequency output in a variety of environments. - Easy installation: Versatile 5.1 cm size allows for straightforward upgrading of car audio or home speakers, enhancing overall sound quality with minimal effort. - Durable construction: Horn tweeters built for auto audio with a high quality diaphragm material, enabling improved high frequency extension and resolution for crisper, more precise highs. Use scenarios - In your car: Upgrade factory or aftermarket door/dash speakers to improve vocal clarity and cymbal shimmer without adding bulky components. - In a home stereo: Integrate with bookshelf or compact speakers to enhance brightness and detail in music and movie soundtracks, compatible with standard 4 Ohm systems. - DIY speaker projects: Add to a small two-way or multi-driver enclosure to achieve a more forward, engaging high end in a compact setup.