The Focal ACX 100 is a high-performance automobile coaxial speaker set designed to elevate in-car audio experiences. It features a 4-inch polypropylene membrane cone, which ensures clarity and fidelity in sound reproduction. The tweeter is made from aluminum and is integrated to offer a smooth frequency response, making the sound richer across various music genres. The ACX 100 is designed to have a sensitivity rating of around 90 dB, allowing it to deliver effective sound even with lower power from car audio systems. It handles a power range of 30 to 80 watts RMS, making it suitable for a wide array of amplifiers. The nominal impedance of the speakers is 4 ohms, which is compatible with most car stereo systems. The speaker's frequency response spans from approximately 60 Hz to 22 kHz, providing a broad range that caters to both low and high frequencies. The build quality includes a robust chassis and grill design, which helps protect the speakers from potential damage while enhancing their durability. Overall, the Focal ACX 100 is designed for those who seek a significant upgrade in their vehicle's sound system, promising improved audio clarity and richness.