I need to identify who makes the NAU25 3" Full Range Driver aluminum driver cone

I need to identify who makes the NAU25 3" Full Range Driver aluminum driver cone that is Fully shielded, high-density neodymium magnet oversized voice coil in high tolerance gap to create strong, highly focused magnetic field.

Frequency Response: 120 Hz - 18 KHz
Efficiency: 89dB
Power Handling: Up to 125watts

I need to replace some of them but cannot find who makes them or where to buy them. Any assistance will be sincerely appreciated.

Thank you,
 

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