RCF ND950 2.0 - 280W 4-inch Titanium Compression Driver with 2-inch Exit Throat and 8-Ohm Impedance in Black Finish

The RCF ND950 2.0 is an ultra-compact, high-performance 4-inch diaphragm compression driver with a 2-inch exit throat, designed for professional audio applications that demand precision, efficiency, and high power handling. This driver features a high power neodymium magnet, ensuring optimal control over the dome assembly's moving mass. This results in higher efficiency, improved transient response, and reduced high-frequency distortion. The advanced design also includes a thin copper ring precision-pressed onto the pole piece to modify and lower the inductance characteristics of the magnetic circuit and voice coil. This helps extend the acoustic frequency response and enhances overall sound clarity.

The ND950 2.0's diaphragm is constructed from pure titanium, only 0.05 mm thick, and is paired with a high-strength Mylar suspension for superior durability and performance. The voice coil assembly utilizes a high-strength Kapton voice coil former designed to withstand high temperatures, paired with edge-wound copper-clad aluminum wire to maximize power handling and efficiency. Additionally, the 4-slot optimized phase plug design is engineered through extended computer-assisted mathematical modeling and testing. This phase plug design controls and minimizes air distortion while maximizing output, ensuring a balanced and accurate acoustic performance.

The ND950 2.0 compression driver features a frequency range of 500 Hz to 20 kHz, with an impressive sensitivity of 110 dB. With a 280W continuous program power handling at 8 ohms, this driver delivers clear, consistent sound across its wide operating range. The inclusion of a copper inductance ring further extends the driver's response, providing smoother transitions and improved high-frequency reproduction. As the smallest available 4" driver, the ND950 2.0 is ideal for integration into compact, high-performance sound systems where space is at a premium but without sacrificing power or quality.

Features

• 4.0-inch Kapton former with edge-wound aluminum voice coil for high efficiency and power handling
• 280W continuous program power handling with a frequency range of 500 Hz - 20 kHz
• 4-slot optimized geometry phase plug for minimized distortion and maximized output
• Pure titanium dome diaphragm, 0.05 mm thick, combined with a flat polyimide suspension for superior performance
• Copper inductance ring for extended high-frequency response and improved control
• Neodymium magnet assembly for high flux density and precise control of the moving mass
• 110 dB sensitivity for clear and efficient sound reproduction
• Compact design with a 2.0-inch exit throat, making it the smallest 4" driver available
• CE compliant for safety standards and reliable performance in professional settings

Specifications

General Specifications

• Exit Throat Diameter: 2.0 inch / 51 mm
• Related Impedance: 8 ohm
• Program Power (watt): 280 W
• Power handling capacity: 140 W
• Sensitivity: 110 dB
• Frequency range: 500 - 20000 Hz
• Diaphragm Material: Pure Titanium
• Suspension Material: Polyimide
• Suspension Design: Flat
• 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: outside
• Flux Density: 2.0 T
• Phase Plug Design: 4 slot
• Phase Plug Material: Aluminum
• Magnetics: Neodymium
• Voice Coil Demodulation Ring: Copper

Thiele (small parameters)

• Bl factor (Bl) (T x m): 17.60 T x m

Mounting Information

• Overall diameter: 146 mm / 5.75 inches
• Overall height: 97 mm / 3.82 inches
• Mounting: 4 x 6 mm threaded holes at 90°

Standard Compliance

• Safety agency: CE compliant

Size/Weight

• Weight: 8.42 lbs

Shipping Information

• Package Height: 4.57 inches
• Package Width: 6.65 inches
• Package Depth: 6.73 inches
• Package Weight: 8.86 lbs