Product Overview

The GKH 420 B (505990) is the factory-authorized solution for protecting the delicate components of your KH 420 monitors. Given the large surface area of the KH 420’s 10-inch woofer and the precision-engineered fabric dome midrange and tweeter, accidental contact during studio cleaning, equipment moves, or transit can lead to costly repairs. The GKH 420 B offers a "stealth" protective layer that fits perfectly onto the front baffle, maintaining the professional aesthetic of the Neumann KH series while providing peace of mind in any professional environment.

Product Description

Uncompromising Driver Protection:

The KH 420 is a precision instrument featuring a 10" long-throw woofer and a unique 3" dome midrange. The GKH 420 B is constructed from a rigid, high-grade metal mesh designed to withstand significant physical force. It acts as a shield against stray cables, mic stands, or accidental human contact, ensuring that the diaphragms and surrounds of your drivers remain in factory condition.

Acoustically Transparent Engineering:

A primary concern when adding a grille to a reference monitor is the potential for diffraction or tonal coloration. Neumann has meticulously engineered the perforation pattern and depth of the GKH 420 B to be acoustically transparent. It allows sound waves to pass through with negligible interference, preserving the monitor's exceptionally flat frequency response, precise imaging, and the ultra-low distortion levels for which the KH 420 is famous.

Rugged and Rattle-Free Mounting:

In a high-output monitor like the KH 420, which is capable of generating immense low-frequency energy, any accessory must be perfectly secured. The GKH 420 B is designed for a precise, vibration-free fit. Once installed, it remains silent even at maximum sound pressure levels (SPL), preventing any unwanted mechanical noise from muddying your mix or master.

Ideal for High-Risk Environments:

While many monitors live in controlled private studios, others are deployed in:

• Outside Broadcast (OB) Vans: Where space is tight and gear is constantly moved.

• Public & Educational Studios: Where multiple users interact with the equipment.

• Mobile Recording Rigs: Where monitors are frequently packed into flight cases.

• Home Studios: To protect against pets, children, or accidental bumps in smaller spaces.

Key Features

• High-Rigidity Metal Mesh: Superior protection against punctures and impacts.

• Acoustically Optimized: Minimizes diffraction to maintain reference-grade accuracy.

• Full-Baffle Protection: Simultaneously shields the 10" woofer, 3" midrange, and 1" tweeter.

• Seamless Integration: Tailored specifically for the Neumann KH 420 cabinet.

• Vibration-Resistant Design: Engineered to stay silent and secure during high-output playback.

• Matching Black Finish: Complements the professional look of the KH series monitors.

• Easy Installation: Fits securely into the existing front-baffle mounting points.

Applications

• Mobile & Field Recording: Essential for protecting drivers during transportation and setup.

• Broadcast & OB Vans: Provides a safety buffer in cramped, high-activity workspaces.

• Commercial Recording Studios: Safeguards the main monitors in high-traffic control rooms.

• Post-Production Suites: Prevents accidental damage in collaborative environments.

• Institutional Use: Ideal for universities and schools where monitors are shared by many students.

Technical Specifications