Important Safety Precautions; Sound Level - Marantz professional PMD-750TA Guide D'utilisation

Important Safety Precautions

Please note: Marantz Professional and inMusic are not responsible
for the use of its products or the misuse of this information for any
purpose. Marantz and inMusic are not responsible for the misuse of
its products caused by avoiding compliance with inspection and
maintenance procedures. Please also refer to the included safety
and warranty manual for more information.

Sound Level

Permanent hearing loss may be caused by exposure to extremely
high noise levels. The U.S. Occupational Safety and Health
Administration (OSHA) has specified permissible exposures to
certain noise levels. According to OSHA, exposure to high sound
pressure levels (SPL) in excess of these limits may result in hearing
loss. When using equipment capable of generating high SPL, use
hearing protection while such equipment is under operation.
Hours per day
8
6
4
3
2
1.5
1
0.50
0.25 or less
4
SPL (dB) Example
90 Small gig
92 Train
95 Subway train
97 High level desktop monitors
100 Classical music concert
102 Riveting machine
105 Machine factory
110 Airport
115 Rock concert