Important Safety Precautions; Sound Level - Alto Professional BLACK 12 Guia Del Usuario

Important Safety Precautions

Please note: Alto Professional and inMusic are not responsible for the use of its products or the misuse of
this information for any purpose. Alto Professional 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.
Suspenion/Rigging
•
Only qualified persons using safe rigging standards should install this loudspeaker. The installer
is responsible for proper selection and use of hardware to properly and safely install the
speakers.
•
Always install loudspeakers in accordance with applicable electrical and building codes.
•
This loudspeaker should be suspended only from its suspension points (M10 x 1.5PH, 30mm
length).
•
Do not suspend multiple loudspeakers in a vertical array.
•
Make sure your cables are out of the way of performers, production crew, and audience so they
will not trip over them, pulling the loudspeaker off the stand or pole.
Stand-Mounting
•
Always install loudspeakers in accordance with applicable electrical and building codes.
•
Install the loudspeaker according to its maximum weight. Check the specifications of your stand
or pole to ensure it can support the loudspeaker's weight. Also, observe all safety precautions
specified by the manufacturer.
•
Do not mount multiple loudspeakers on the same stand or pole.
•
Always verify that the stand or pole is on a flat, level, and stable surface. Also, fully extend the
legs of tripod-style stands, and ensure its legs do not present a trip hazard.
•
Inspect the stand (or pole and associated hardware) before each use and do not use equipment
with worn, damaged, or missing parts.
•
Always be cautious in windy, outdoor conditions. You may need to place additional weight (e.g.,
sandbags) on stand's base to improve stability. Do not attach banners or similar items to any
part of a loudspeaker system. Such attachments could act as a sail and topple the system.
•
Unless you are confident that you can handle the loudspeaker's weight, ask another person to
help you lift it onto the stand or pole.
•
Make sure your cables are out of the way of performers, production crew, and audience so they
will not trip over them, pulling the loudspeaker off the stand or pole.

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
.50
.25 or less
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
4