The ESB 1.6C is a pair of 2-way coaxial speakers from the Mille 1000 series, designed to bring balanced audio into your vehicle's sound system. These 165 mm drivers combine a pressed paper cone woofer for lightness and stiffness with a silk dome tweeter that ensures a smooth, natural high-frequency response. To maintain efficiency and linearity in the treble, the tweeters utilize neodymium magnets, while the woofers rely on Y-25 ferrite magnets and rubber surrounds to provide stability and high damping during playback. Technically, these speakers handle 90 W of continuous power and up to 180 W peak when used with an 80Hz high-pass filter. They cover a frequency range from 50 Hz to 20 kHz with a sensitivity of 88 dB at 1W/1m, making them responsive enough for various amplifier setups. With a mounting diameter of 144 mm and a depth of approximately 59 mm, they fit into standard door locations, offering a reliable upgrade for anyone looking to improve their car's acoustic clarity without needing complex custom installations.