RCF ND650 90W AES 1.4" Neodymium Compression Driver 8 Ohm

Description

The RCF ND650 is a high-performance professional compression driver designed for demanding live sound, touring, and installed audio applications. Engineered for clean, powerful high-frequency reproduction, it delivers excellent sensitivity, extended bandwidth, and long-term reliability. The neodymium magnet structure provides high magnetic efficiency while keeping overall weight manageable, making it ideal for portable and flown systems.

A precision-formed titanium diaphragm ensures accurate transient response and detailed high-frequency clarity. The 2.5" edgewound aluminum voice coil on a Kapton former offers excellent thermal stability and power handling. A 3-slot optimized phase plug improves wavefront coherence and reduces distortion, while the vented suspension system contributes to smooth, linear performance.

Technical Specifications

Acoustic and Electrical
Rated impedance: 8 ohm
Power handling: 90 W AES
Program power: 180 W
Sensitivity: 110 dB (1 W / 1 m)
Frequency range: 700 Hz – 20 kHz
Exit throat diameter: 1.4 inch (36 mm)

Voice Coil and Materials
Voice coil diameter: 2.5 inch (63 mm)
Voice coil winding: Edgewound aluminum
Voice coil former: Kapton
Diaphragm material: Titanium
Phase plug: Aluminum, 3-slot design

Mechanical and Physical
Overall diameter: 115 mm
Depth: 46 mm
Mounting: 4 threaded holes at 90°
Net weight: 1.88 kg

The ND650 is well suited for use with 1.4" horn systems in high-output PA cabinets, line arrays, and custom speaker designs where clarity, efficiency, and reliability are essential.