RCF

RCF ND350 1.75-inch Diaphragm 1 inch Exit Driver

1 inch

The RCF ND350 is a high-output 1.75-inch diaphragm compression driver built for clear, powerful mid-high frequency reproduction.

$170.60*
In Stock on Amazon.com
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*Price sourced from Amazon.com. Last updated:Jul 13, 2026.Price and availability are subject to change.

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Overview

The RCF ND350 is a 1-inch exit compression driver featuring a 1.75-inch diaphragm, engineered for professional sound reinforcement and speaker building applications. Compression drivers like the ND350 are the engine behind horn-loaded mid-high frequency sections in PA systems, stage monitors, and installed sound setups. RCF, an established name in professional audio, has designed the ND350 to deliver clear, detailed reproduction across its operating bandwidth with the power handling necessary for demanding live and installed environments.

With its standard 1-inch exit throat, the ND350 mounts directly onto a broad range of commercially available horns and waveguides, giving system designers flexibility in coverage pattern and dispersion. The 1.75-inch diaphragm provides a larger radiating area than entry-level 1-inch diaphragm models, translating to improved sensitivity and headroom. Whether you're building a custom two-way cabinet, replacing a worn driver in an existing system, or prototyping a new design, the ND350 offers professional-grade performance in a compact, easily integrated package.

Key Features

Country of Origin: China

Package quantity: 1

Product Type: Electronic Adapter

Package dimensions: 7.62 cms L x 8.89 cms W x 10.16 cms H

Specifications

Diaphragm Size
1.75 inches
Exit Size
1 inch
Product Type
Compression Driver
Country of Origin
China
Package Quantity
1
Package Dimensions
7.62 cm (L) x 8.89 cm (W) x 10.16 cm (H)
Brand
RCF
Model
ND350

Pros & Cons

👍 Pros

  • 1.75-inch diaphragm provides higher power handling and output than smaller 1-inch diaphragm drivers
  • 1-inch exit is compatible with a wide range of standard horns and waveguides
  • RCF's reputation in professional audio ensures reliable build quality and consistent performance
  • Compact dimensions make it easy to integrate into custom speaker cabinets and PA enclosures

👎 Cons

  • Requires a compatible horn or waveguide to function — it cannot be used as a standalone speaker
  • Must be paired with an appropriate crossover network, adding complexity and cost to a build
  • Limited product documentation available may make it harder to match with specific cabinet designs
  • As a pro audio component, it is intended for experienced builders and installers rather than casual users

Frequently Asked Questions

The ND350 has a 1-inch exit, which is compatible with standard 1-inch throat horn flares and waveguides.
The ND350 is a complete compression driver unit with a 1.75-inch diaphragm, not just a replacement diaphragm kit.
It is designed for mid-high frequency reproduction and is typically crossed over above several hundred hertz, paired with a woofer in a two-way speaker system.
According to the product specifications, the ND350 is manufactured in China.