Neumann KK 145 nx Speech Cardioid Small-Diaphragm Condenser Capsule for KM A/D

Neumann KK 145 nx Cardioid Speech Capsule Head for KM A/D Modular Microphone System

The Neumann KK 145 nx is a professional small-diaphragm condenser capsule head designed for the Neumann KM A/D modular microphone system. Featuring a cardioid pressure-gradient transducer with an integrated acoustic low-frequency roll-off, the KK 145 nx is specifically optimized for close speech applications. Its unique acoustic design suppresses unwanted low-frequency interference such as wind noise and structure-borne vibrations while naturally compensating for proximity effect at a speaking distance of approximately 15 cm, delivering clear, balanced, and intelligible voice reproduction.

Finished in Neumann's durable Nextel^® black coating, the KK 145 nx is an ideal choice for broadcast studios, podcast production, voice-over work, live speech reinforcement, conferencing, and professional recording environments. When combined with a compatible KM A analog output stage or KM D digital output stage, it becomes part of a highly flexible modular microphone system trusted by audio professionals worldwide.

Optimized for Professional Speech Recording

Unlike conventional cardioid capsules, the KK 145 nx incorporates an acoustic bass roll-off that effectively reduces unwanted low-frequency noise before it reaches the recording chain. Because pressure-gradient microphones naturally exhibit proximity effect, this acoustic tuning produces a remarkably flat frequency response when the speaker is positioned approximately 15 cm from the capsule. The result is natural voice reproduction with excellent intelligibility and reduced boominess, making it particularly well suited for spoken-word applications.

Designed for the Neumann KM A/D Modular System

The KK 145 nx is exclusively designed for use with the Neumann KM A/D modular microphone system. It is compatible with both the KM A analog output stage and the KM D digital output stage, allowing users to build a microphone configuration that meets the needs of studio, broadcast, live production, or location recording. The modular design also supports extension tubes, remote cables, swivel joints, and a comprehensive range of Neumann accessories for maximum installation flexibility.

Key Features

• Professional modular small-diaphragm condenser capsule head.
• Cardioid pressure-gradient transducer.
• Integrated acoustic low-frequency roll-off.
• Optimized for speech recording at approximately 15 cm.
• Natural compensation of proximity effect.
• Reduces wind noise and structure-borne interference.
• Compatible with KM A analog and KM D digital output stages.
• Part of the Neumann KM A/D modular microphone system.
• Compact precision-engineered construction.
• Professional Nextel^® black finish (nx).

Ideal Applications

• Broadcast studios
• Voice-over recording
• Podcast production
• Speech recording
• Conferencing systems
• Live presentations
• Film and television dialogue
• Corporate communications
• Studio narration
• Professional content creation

Technical Specifications

• Product Type: Modular condenser capsule head
• Model: KK 145 nx
• Acoustical Operating Principle: Pressure-gradient transducer
• Polar Pattern: Cardioid with acoustic low-frequency roll-off
• Frequency Response: 20 Hz – 20 kHz (with compatible output stage)
• Sensitivity: 14 mV/Pa
• Equivalent Noise Level (A-weighted): 14 dB-A
• Signal-to-Noise Ratio (A-weighted): 80 dB
• Maximum SPL: 138 dB
• Maximum SPL with 10 dB Preattenuation: 148 dB
• Compatible Output Stages: KM A (analog), KM D (digital AES42)
• Compatible System: Neumann KM A/D Modular Microphone System
• Capsule Diameter: 22 mm
• Capsule Length: 18 mm
• Capsule Weight: 15 g
• Finish: Nextel^® Black (nx)

Package Contents

• Neumann KK 145 nx Capsule Head
• Wooden storage box

Why Choose the Neumann KK 145 nx?

The Neumann KK 145 nx is purpose-built for professional speech applications where clarity, intelligibility, and consistent tonal balance are essential. Its specialized acoustic design minimizes unwanted low-frequency noise while providing a naturally balanced frequency response during close-microphone operation. As part of the Neumann KM A/D modular microphone system, the KK 145 nx offers exceptional flexibility, premium build quality, and the renowned sonic accuracy trusted by broadcasters, recording engineers, and content creators around the world.