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How to Maintain Good Microphone Hygiene

How to Maintain Good Microphone Hygiene

This article has been reposted from www.en-au.sennheiser.com.

Due to COVID-19 pandemic we assembled this note on protecting and cleaning Sennheiser/Neumann microphones and accessories. Especially for vocal and speech recordings, microphones are often used at close proximity to the mouth, possibly also by multiple users.

To reduce the risk of spreading diseases through bacteria and viruses, one or more remedies, explained in detail below, may be used:

  • ideally, have just one user per microphone (including the accessories)
  • after or before use, clean all surfaces, i.e. microphone housings, head baskets and accessories
  • leave the microphone unused for some time period
  • utilize accessories such as windshields and thin plastic film bags to add protection
Cleaning the microphone housing

For cleaning Sennheiser/Neumann microphone housings from soiling including human exhalations, you may use ethyl alcohol (ethanol) or isopropyl alcohol (isopropanol). Used as a disinfectant, typically a 70% solution is used. Apply with a disposable soft cloth, a soft brush or paper tissue. Make sure that the liquid is applied only to the outside of the microphone and does not enter the inside or the capsule.

Do not use rough materials which might scratch the surface. Do not use any solvents stronger than ethanol or isopropanol, as these might damage the surface.

Never use sprays, as these can deposit on the membrane and thus damage the microphone capsule!

Cleaning removable microphone head baskets

With some microphones, the head basket can be easily removed for cleaning. Make sure not to touch or damage the capsule!

With the head baskets containing foam windshields, remove the inner foam and clean it separately as described below.

Metal head baskets can then be cleaned also on the inside with ethanol or isopropanol. You may also immerse the head basket in clean, hot water (e.g. 70°C/160°F). Do not use the dishwasher. Let the basket dry out completely before re-assembly.

To learn a more indepth solution for microphone hygiene, click here!

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