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.

Polypropylene (PP) is a tough thermoplastic resin that is an ideal material for a speaker cone – with low mass and high damping, PP cones offer 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 using advanced Computer-Aided Manufacturing, developed 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 to produce natural, detailed sound with deep and powerful bass.

More than any other speaker, the positioning and mounting location of the tweeter is crucial to the stereo imaging of the system and the overall listening experience.  To ensure installation flexibility, the D component system tweeters are extremely compact and feature a unique swivel mount that allows precise aiming of high frequencies. Pioneer’s tri-position mounting kit (included) provides the flexibility to mount the tweeter using a variety of methods; flush mount, surface mount or bracket mount, especially important for concealing the tweeter behind an original equipment tweeter grille in the vehicle dash or door.