The RCF ND940 is a high-performance 4-inch diaphragm compression driver with a 1.4-inch exit throat, designed for precise sound reproduction and high-power handling. It features a neodymium magnet assembly for superior control, ensuring high efficiency and reduced high-frequency distortion. The Kapton voice coil former and edge-wound aluminum wire enhance durability and thermal resistance, while the copper demodulation ring optimizes inductance for extended frequency response. A 4-slot phase plug design minimizes air distortion, ensuring smooth and accurate sound output, making it ideal for professional audio applications. Product Specifications: Exit throat diameter: 1.4 inch (36 mm) Impedance: 8Ω Program power: 280W Power handling: 140W Sensitivity: 110 dB Frequency range: 500 Hz - 20 kHz Diaphragm material: Pure titanium Suspension material: Polyimide Suspension design: Flat Voice coil diameter: 4.0 inch (102 mm) Winding material: Edgewound aluminum Former material: Kapton (Direct Drive) Layers: Outside, single layer Flux density: 2.0 T Phase plug: 4-slot aluminum Magnet type: Neodymium Demodulation ring: Copper Overall diameter: 140 mm (5.51 inches) Overall height: 60 mm (2.36 inches) Mounting: 4 × 6 mm threaded holes at 90° Certifications: CE compliant Weight: 2.72 kg (6 lbs)
