The D is a result of Pioneer’s automotive loudspeaker engineering experience and expertise, combining advanced design techniques with highly developed manufacturing capabilities.
Following Pioneer’s OPEN & SMOOTH sound concept, the D series of automotive loudspeakers provide broad and balanced frequency response with a wide sound stage and ambience.
Specification:
System Type 2-way Coaxial
Sound Pressure Level (Sensitivity) 85dB (± 1.5dB)
Frequency Range      32 Hz to 49 kHz
Continuous Power Handling (RMS) 90 Watts
Maximum Peak Power Handling 270 Watts
Nominal Impedance  4Ω
Crossover Frequency 3700 Hz
Tweeter
Type   Soft Dome
Diameter  26mm
Diaphragm Material Polyester
Magnet Material        Neodymium
Magnet Weight 6.4 g
Swivel Type 
Woofer
Diameter 6.5”
Cone Material Aramid Fiber Interlaced Injection Molded Polypropylene (IMPP)
Center Cap Material
Surround Material Butyl Rubber
Magnet Material Ferrite
Magnet Weight 11.3 oz