RCF ND340 - 100W 1.75-inch Polyimide Compression Driver with 1-inch Exit Throat and 8-Ohm Impedance in Black Finish

The RCF ND340 is a high-performance 1.75-inch polyimide diaphragm compression driver featuring a 1.0-inch exit throat, designed to deliver exceptional clarity and efficiency across its frequency range of 1200 Hz to 20 kHz. Ideal for professional applications requiring compact size and reliable performance, the ND340 offers excellent output in high-powered systems where low distortion and high sensitivity are essential.

At the core of the ND340 is a high-flux neodymium magnet assembly, ensuring high efficiency and excellent transient response. The diaphragm is precision-formed from polyimide, a material selected for its lightweight properties and excellent mechanical stability, making it ideal for high-frequency applications. The suspension design is based on polyimide and provides a flat response with reduced distortion, ensuring superior sound quality across the driver's operating range.

The voice coil assembly uses a high-temperature Kapton former, paired with edge-wound copper-clad aluminum wire, delivering excellent thermal stability and power handling capabilities. This driver can handle up to 100W of continuous program power, making it an excellent choice for professional audio systems requiring consistent, high-output performance.

With a sensitivity of 109 dB, the ND340 provides exceptional sound pressure levels, while its 2-slot optimized geometry phase plug design ensures smooth, low-distortion output. The compact size of the driver, combined with its advanced design, makes it a perfect choice for applications where space is limited but performance cannot be compromised. It is also equipped with a copper inductance ring that extends the driver's high-frequency response.

Features

• 1.75-inch polyimide diaphragm for excellent high-frequency performance
• 100W continuous program power handling at 8 ohms
• Frequency range from 1200 Hz to 20 kHz for clear, detailed sound
• 2-slot optimized geometry phase plug design for smooth, low-distortion output
• High-flux neodymium magnet assembly for high efficiency and fast transient response
• Kapton former with edge-wound copper-clad aluminum voice coil for high thermal stability
• 109 dB sensitivity for exceptional output and performance
• Compact and lightweight design, ideal for small-to-medium size systems
• CE compliant for safety and reliability

Specifications

General Specifications

• Exit Throat Diameter: 1.0 inch / 25 mm
• Related Impedance: 8 ohm
• Program Power (watt): 100 W
• Power handling capacity: 50 W
• Sensitivity: 109 dB
• Frequency range: 1200 - 20000 Hz
• Diaphragm Material: Polyimide
• Suspension Material: Polyimide
• Suspension Design: Flat
• Minimum Impedance (ohm): 6.50 ohm
• Voice Coil Diameter: 1.75 inch / 44 mm
• Voice Coil Winding Material: Edgewound Aluminum
• Voice Coil Former Design: Straight - Kapton
• Number of layers: 1
• Kind of layers: outside
• Flux Density: 1.9 T
• Phase Plug Design: 2 slot
• Phase Plug Material: PP Composite
• Magnetics: Neodymium

Thiele (small parameters)

• Bl factor (Bl) (T x m): 7.90 T x m

Mounting Information

• Overall diameter: 76 mm / 2.99 inches
• Overall height: 39 mm / 1.54 inches
• Mounting: 4 x 5 mm threaded holes at 90°

Standard Compliance

• Safety agency: CE compliant

Size/Weight

• Weight: 1.39 lbs

Shipping Information

• Package Height: 2.56 inches
• Package Width: 3.74 inches
• Package Depth: 3.82 inches
• Package Weight: 1.79 lbs