The ESB 8.028S high-frequency speakers from the 8000 series are designed to bring clarity and detail to your vehicle's audio system. These tweeters feature a 28 mm soft dome made from Torcon, a high-performance fiber and polyphenylene sulfide blend, which is shaped with a semi-catenary profile to ensure smooth sound reproduction. To maintain stability during intense use, the design includes a center ventilation hole for cooling and dB Cloth damping material positioned under the dome. Built for durability and precision, the square mounting plate is CNC machined from a combination of brass, stainless steel, and Avional aluminum. The internal motor utilizes a vented neodymium magnet, optimized through FEA to handle a nominal power of 110 watts and transient peaks up to 220 watts. With a frequency response ranging from 940 Hz to 25 kHz and a sensitivity of 94 dB, these 4 Ohm speakers pair well with amplifiers providing between 40 and 150 W RMS, making them a reliable choice for listeners seeking a refined high-end frequency range.