 |
| |||||
| ||||||||||||||
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.
Applications:
With a wide frequency response range (500 Hz - 20.000 Hz) and 280 Watt power handling, the ND940 is the ideal driver for heavy duty professional applications.
Main 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
| General Specifications | |
| Exit Throat Diameter: | 35.5 / 1.4 mm/inch |
| Rated Impedance: | 8 Ω |
| Power handling capacity continuous program1: | 280 W AES |
| Power handling capacity AES2: | 140 W AES |
| Sensitivity: | 110 dB |
| Frequency Range: | 500 Hz ÷ 20000 Hz |
| Diaphragm Material: | Pure titanium |
| Suspension Material: | Polyimide |
| Suspension Design: | Flat |
| Minimum Impedance: | (at 3.5kHz) 8.0 Ω |
| Voice Coil Diameter: | 100 / 4.0 mm/inch |
| Voice Coil Material: | Edgewound aluminium |
| Voice Coil Former Design: | Direct Drive Kapton |
| Number of layers: | 1 - outside |
| BL Factor: | 16 T · m |
| Flux Density: | 1.9 T |
| Phase Plug Design: | 4 slots |
| Phase Plug Material: | Aluminium |
| Magnetics: | Neodymium |
| Voice Coil Demodulation: | Copper ring |
| Mounting information | |
| Overall diameter: | 140 / 5.2 mm/inch |
| Overall height: | 54 / 2.1 mm/inch |
| Mounting 4 × 5 mm holes at 90°: | 101.6 / 4.0 mm/inch |
| Net weight: | 3 / 6.4 kg/lbs |
| Shipping information | |
| Shipping weight: | 3.3 / 7.1 kg/lbs |
| Other RCF products similar to RCF ND940 140W AES 1.4" Compression Driver 8 Ohm: |
|
If you find 'RCF ND940 140W AES 1.4" Compression Driver <span class="ohm_8">8 Ohm</span>' at a lower price from an authorised UK dealer, tell us and we'll aim to match it. Request a price match. Terms & Conditions.
View RCF website for more information for RCF ND940