How to avoid permanent hearing loss

Exposure to extremely high noise levels especially during live music concert or music rehearsal before the actual concert may cause permanent hearing loss. Remember, a deaf sound engineer is a useless engineer. Individuals vary considerably in susceptibility to noise induced hearing loss, but nearly everyone will lose some hearing if exposed to sufficiently intense noise for a period of time.


According to OSHA ( Occupational Safety and Health Administration , USA), any expose in excess of these permissible noise level ( refer below) for a period of time could result in some hearing loss.


Therefore, to ensure against potentially dangerous exposure to high sound pressure levels, it is recommended that all persons exposed to equipment capable of producing high sound pressure levels use hearing protectors while the equipment is in operation.


Ear plugs or protectors in the ear canals or over the ears must be worn when operating the equipment in order to prevent hearing loss if exposure is in excess of the permissible noise level set by OSHA.

Reference : http://www.mackie.com/products/cfx12mkii/#DOCUMENTS