Pioneer TS-D69F D Series 6"x9" 110W RMS 2-way Car Speakers

26mm Polyester Soft Dome Tweeter 

Contoured from lightweight, resin-impregnated fibers of coated polyester fabric, the D tweeter delivers extended high-frequency performance. The 26mm diaphragm is very resistant to the harsh environmental conditions of the automotive interior (temperature, humidity, vibration, etc.), while maintaining its uniform hemispherical shape to reduce dome breakup due to excessive vibration at ultrasonic frequencies. The result is extremely low distortion levels and a smooth, natural sound.

Aramid Fiber Interlaced Injection Molded Polypropylene (IMPP)

Polypropylene (PP) is a tough thermoplastic resin, ideal material for a speaker cone. The low mass and high damping of a PP cone generate good sensitivity and low distortion. However, polypropylene cones lack the rigidity and strength required for high output and extreme low bass. To resolve this, Pioneer engineers used advanced Computer-Aided Manufacturing to develop a process to blend aramid fibers into the polypropylene resin during the injection molding process. The resulting aramid fiber interlaced IMPP cone is ultra-thin and low mass with high rigidity and superior strength, built to produce natural, detailed sound with deep and powerful bass.