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Description
The ND940 is a ultra compact size, high performance, high power handling 4.0-inch diaphragm compression driver with a 1.4 inch exit throat. A thin copper ring is precision pressed on to the pole piece in order to modify and lower the inductance characteristics of the magnetic circuit and voice coil providing a controlled extension of the acoustic frequency response. The voice coil assembly is designed using a high strength, high temperature Kapton® voice coil former and edge wound copper clad aluminium wire directly joined to the diaphragm by RCF proprietary Direct Drive kapton technology. The ND940 features a 4-slot, optimised geometry, phase plug design. Extended computer assisted mathematical modelling and testing has resulted in a geometry that provides a balanced acoustic performance controlling and lowering air distortion and maximizing output.
Features
- 4.0 inch, Kapton former, edge wound aluminium voice coil
- 280W continuous program power handling
- Frequency range: 500Hz - 20kHz
- 4-slot optimized geometry phase plug
- Titanium diaphragm, Polyimide surround
Why We Like This
It offers consistent high-frequency performance with a compact design and controlled response.
FAQs
Q: What type of systems is this driver designed for?
It is suitable for professional line arrays and point-source speaker systems.
Q: What helps improve its frequency response?
The copper inductance ring helps extend and control the response.
Q: What is the frequency range?
500 Hz to 20 kHz.
Based in Chicago, IL, Gear Club Direct supports audio professionals with reliable components for high-performance sound systems.
Tech Specs
Exit Throat Diameter: |
1.4 inch / 36 mm |
Program Power (watt): |
280 W |
Power handling capacity: |
140 W |
Sensitivity: |
110 dB |
Frequency range: |
500 - 20000 Hz |
Minimum Impedance (ohm): |
8.50 ohm |
Voice Coil Diameter: |
4.0 inch / 102 mm |
Voice Coil Winding Material: |
Edgewound Aluminum |
Voice Coil Former Design: |
Direct Drive Kapton |
Number of layers: |
1 |
Kind of layers: |
inside/outside |
Flux Density: |
2.0 T |
Phase Plug Design: |
4 slot |
Phase Plug Material: |
Aluminum |
Magnetics: |
Neodymium |
Delivery & Returns
At Gear Club Direct, we want you to be happy with your purchase. We understand that there are times when once a product is received, it may not be what you needed or wanted after all. So, we will gladly accept your qualifying return within 15 days of the delivery date. After 15 days of the delivery date, all sales are final.
The Return Process
Customers are required to obtain a Pre-Authorization to return any product. To submit a request for a return, simply log in to your account and request a return and one of our sales representatives will contact you within 24-48 business hours. If you do not have an account with us, please open a help ticket, providing as much detail as possible and whether you are requesting a refund or an exchange. READ MORE
