The Sansui SP-X 9900 is a floor-standing loudspeaker model that gained popularity during the 1970s. It features a unique design that combines both aesthetics and functionality, with a robust cabinet construction aimed at minimizing unwanted resonance. The speaker is equipped with a complex array of drivers, including a 12-inch woofer, a mid-range driver, and a tweeter, allowing it to cover a wide frequency range effectively. The frequency response is listed as approximately 20 Hz to 20 kHz, making it suitable for various music genres and audio applications. Additionally, the SP-X 9900 incorporates a four-way speaker system, providing enhanced sound clarity and detail. The nominal impedance is around 8 ohms, and the power handling capacity can reach up to 200 watts, making it compatible with a variety of amplifiers. Overall, the SP-X 9900 is tailored for users seeking quality sound reproduction along with a striking visual presence in their audio setup.