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Dual-Layer IMX (Injection Molded Matrix) Aramid/Basalt Fiber Composite Cone
To create new D-Series speakers, Pioneer developed the industry’s first basalt fiber made from natural rock interwoven with aramid fiber. Used in the surface layer, this Aramid/Basalt Fiber material is highly rigid and better absorbent, enhancing stability and maintaining integrity throughout a wide temperature range.

Rear Chamber Tweeter Enclosure
D-Series speakers feature an exclusive rear chamber tweeter enclosure that we first used in our famed PRS speakers. It extends mid-range frequency for improved vocal imaging and staging.

High-Quality Crossover
The built-in -12dB/Octave HPF and LPF crossover improves the transition from mid to high frequency, for a smoother mid-range to tweeter response. Audiophile-grade capacitors and inductors are used, and all components are encased in a clear acrylic cover for protection.

Key Features

Smooth Off-Axis Response

• Optimal Choice of Tweeter Diaphragm Shapes
• Wave Guides control sound dispersion to make sound stage wider in the car.

Lower Crossover Frequency

• Large-Sized Tweeter Diaphragm (1-1/8" diameter)
• Rear Chamber
• Light Weight Soft-Dome Diaphragm
• High-Quality Passive Crossover Network (Woofer, LPF: -6 dB; Tweeter, HPF: -12 dB)

Low Distortion

• Thick Woofer Basket
• Large-Sized Woofer Magnet
• Dual-Layer IMX (Injection Molded Matrix) Aramid/Basalt Fiber Composite Cone