GRAS AM0387 High-Temperature Click-Mount Windscreen for 147EB

Introduction

The AM0387 is a windscreen specifically designed and optimized for use with the GRAS 147EB microphone set. Constructed from high-temperature, 30 PPI (pores per inch) foam, it is suitable for applications up to 125°C. The windscreen features a click-mount system that ensures a secure and reliable attachment to the GRAS 147EB.

Below it is shown mounted on the GRAS 147EB (microphone set not included).

Design

When a microphone is placed in a laminar flow, turbulence is created which in turn results in unwanted pressure variations on the diaphragm. By using a windscreen the pressure variations are moved as far away from the diaphragm as possible.

Theoretically this supports a “the-bigger-the-better design”, but in practice it is a compromise between air speed reduction, practical size and self-induced noise. Self-induced noise is wobble-noise which is generated, when the windscreen starts moving around the microphone.

The GRAS windscreens are all size optimized and their special, open-cell foam structure and a number of pores per inch (PPI), are designed to resist a humid environment and at the same time not influence the sound pressure measurement result significantly.

Quality & Warranty

GRAS accessories are made of stainless steel, alloys and high-quality composites. These items are covered by a 2 year warranty respecting their intended use. On consumables like batteries, cables and windscreen we offer a 6 month warranty.

Dimensions in mm