The MB Quart 890 MCS is a component speaker system designed for automotive applications, featuring a combination of high-performance audio elements. It typically includes a 6.5-inch woofer, known for delivering deep bass and clear midrange frequencies, along with a 1-inch tweeter that offers precise high-frequency response. The speaker system is constructed with durable materials to withstand the conditions within a vehicle environment, while providing an aesthetic appeal that fits modern car interiors. The crossover network helps to direct the appropriate frequencies to the woofer and tweeter, ensuring optimal sound quality and clarity. The sensitivity rating is often around 90 dB, making it efficient and capable of producing high volumes with minimal power.