The Yamaha NS-700 X is a bookshelf-type monitor speaker system introduced in 1986, priced at ¥ 59,800 for a single unit. This speaker is engineered to handle the dynamic range and quick response required for digital audio while also enhancing the sensitivity of analog recordings. It features a robust construction with a 31 cm cone woofer utilizing Pure Cross Carbon Cone technology. This diaphragm is crafted through hot press molding, which enhances rigidity and durability with a two-layer structure. The voice coil bobbin is made from phosphor bronze, ensuring excellent thermal conductivity for effective cooling. Additionally, the NS-700 X includes a 10 cm composite midrange and a 3 cm dome tweeter, both utilizing high-quality materials to ensure seamless sound transition across ranges. The tweeter is particularly notable for its ion-plated amorphous diamond diaphragm, known for its hardness and superior propagation speed, facilitated by advanced LSI manufacturing techniques. The enclosure uses a bass reflex design with rear ducting, incorporating high-density particleboard and hozo baffles for enhanced structural integrity. Overall, this model is designed with a focus on reducing magnetic interference and optimizing directional characteristics through a carefully planned layout and advanced network system.