18 Sound ND1P – Premium Compact Neodymium HF Driver for Superior High-Frequency Performance
The 18 Sound ND1P is a high-performance 1-inch exit neodymium high-frequency compression driver, purpose-built for professional audio applications requiring precision, clarity, and compact design. Engineered and manufactured in Italy by 18 Sound—a global leader in loudspeaker transducer technology—the ND1P represents the pinnacle of compact HF driver design, combining lightweight construction with exceptional sonic characteristics.
Ideal for use in compact two-way systems, line arrays, or monitors where space and weight are critical, the ND1P delivers accurate high-frequency reproduction with minimal distortion, even at high sound pressure levels. With its advanced materials, superior phase plug geometry, and neodymium magnetic structure, the ND1P is a trusted solution for demanding professional audio setups.
Exceptional Clarity and Efficiency
At the heart of the ND1P lies a polyimide diaphragm and edge-wound aluminum voice coil that together produce outstanding transient response and high output with remarkable clarity. The driver features a 1.75-inch (44 mm) voice coil and a 1-inch (25 mm) throat exit, making it highly efficient across its operating bandwidth.
With a frequency response of 1.6 kHz to 18 kHz, the ND1P delivers smooth and extended highs, ideal for vocal intelligibility, cymbal articulation, and crisp audio imaging. Its sensitivity of 109 dB (1W/1m) ensures that even low-power amplification can drive it effectively, offering clear, bright highs with minimal coloration.
Lightweight Neodymium Motor Design
The ND1P utilizes a compact yet powerful neodymium magnetic structure, significantly reducing the overall weight without sacrificing performance. This makes it a perfect fit for mobile PA systems and line arrays where weight reduction is crucial for transport and rigging.
Despite its compact footprint, the driver’s neodymium motor delivers excellent magnetic flux density, ensuring strong, accurate diaphragm control. This results in low distortion and high-fidelity reproduction across the full HF range.
Precision Phase Plug for Accurate Output
The ND1P features a radial phase plug design, optimized using finite element analysis, which improves acoustic loading and phase consistency. This enhances the driver’s ability to produce a coherent wavefront, which is especially important when used in multiple-driver arrays or horn-loaded configurations.
The phase plug’s geometry also contributes to more even dispersion, better off-axis response, and reduced interference at crossover points—resulting in a smooth and natural sound, even in complex multi-way loudspeaker systems.
Reliable Performance Under Stress
Engineered for durability, the ND1P is built to withstand the thermal and mechanical stress of continuous professional use. The voice coil is edge-wound and copper-clad for enhanced conductivity and power handling, while the diaphragm assembly is designed to resist fatigue and environmental degradation.
With an AES power rating of 50W and a program power rating of 100W, the ND1P can be confidently deployed in high-output systems without concern for performance degradation or thermal failure.
Product Specifications
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Model: 18 Sound ND1P
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Throat Diameter: 1 inch (25.0 mm)
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Voice Coil Diameter: 1.75 inch (44.0 mm)
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Nominal Impedance: 8 Ohms
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Power Handling (AES): 50W
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Program Power: 100W
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Frequency Response: 1.6 kHz – 18.0 kHz
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Sensitivity: 109.0 dB (1W/1m)
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Magnet Material: Neodymium
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Diaphragm Material: Treated Polyethylene
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Weight: 0.9 kg
Conclusion
The 18 Sound ND1P is a compact yet powerful high-frequency compression driver that offers exceptional performance in lightweight designs. With its neodymium motor, finely engineered phase plug, and high sensitivity, it is an excellent choice for portable PA systems, compact line arrays, and professional monitoring solutions. Whether you’re designing a high-end speaker system or upgrading your current rig, the ND1P delivers precise, powerful high-frequency performance you can rely on.
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About 18 Sound
18 Sound products are proudly made in Reggio Emilia, Italy, combining advanced technology with Italian craftsmanship. Known for their high-performance professional audio components, 18 Sound is a trusted name in the global audio industry. Their state-of-the-art manufacturing and strict quality control ensure exceptional reliability and sound clarity. 18 Sound products are designed to meet the demands of speaker builders and audio professionals, 18 Sound offers premium products with outstanding value and performance worldwide.
