Yamaha v1.01 User Manual download pdf (Page 4)

Page 4/58 INTRODUCTION

SAFETY ISSUES

IMPORTANT NOTICE CONCERNING HIGH SOUND PRESSURE LEVELS

Exposure to extremely high noise levels may cause a permanent hearing loss.

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 sufficient of

time. The U.S. Government’s Occupational and Health Administration (OSHA) has

specified the following permissible noise level exposures: Sound Duration Per

Day In Hours Sound Level dBA, Slow Response

8 90

6 92

4 65

3 97

2 100

1 ½ 102

1 105

½ 110

¼ or less 115

According to OSHA, any exposure in excess of the above permissible limits could result in some

hearing loss. Ear plugs or protectors to the ear canals or over the ears must be worn when operating

this amplification system in order to prevent a permanent hearing loss, if exposure is in excess of the

limits as set forth above. 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 such as this amplification system be protected by hearing protectors while this unit is in

operation.

SYSTEM RIGGING SAFETY RULES

Before use of RS Subwoofers, please ensure that anyone involved in system deployment

understands the rigging and stacking Safety rules as described in the ”RS15

HARDWARE, SAFETY FIRST” section. Failure to do this exposes people to potential

injury or death.

ELECTRICAL SAFETY

WARNING ! GEO S12 TDCONTROLLER, NX242 DIGITAL CONTROLLER, NXAMP4x1 AND

NXAMP4x4 POWERED CONTROLLERS ARE CLASS 1 APPARATUS AND MUST BE EARTHED.

The green and yellow wire of the mains cord must always be connected to an installation

safety earth or ground. The earth is essential for personal safety as well as the correct

operation of the system, and is internally connected to all exposed metal surfaces.

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Yamaha v1.01 User Manual Page 4