B-52 Matrix 1500 Instruction Manual page 4

23. LIGHTNING – For added protection during a lightning storm, or
when it is left unattended and unused for long periods of time,
unplug it from the wall outlet. This will prevent damage to the product
due to lightning and power-line surges.
24. REPLACEMENT PARTS – When replacement parts are required,
besure the service technician has used replacement parts specified
by the manufacturer or have the same characteristics as the original
part. Unauthorized substitutions may result in fire, electric shock, or
other hazards.
25. SAFETY CHECK – Upon completion of any service or repairs to
this product, ask the service technician to perform safety checks to
determine that the product is in proper operating condition.
26. FUSES – Always use the correct rating and type of fuse as
indicated on the rear panel of the amplifier. Note the proper rating fuse
is determined by the AC line voltage in the country this speaker system
is being operated. COMPLETELY DISCONNECT POWER CORD
FROM AMPLIFIER BEFORE ATTEMPTING TO REPLACE FUSE!
27. AC SELECT SWITCH: This switch must be set to match the AC line
voltage in the country this speaker system is being operated. To
change the setting, loosen (do not remove) the two screws used to
hold the protective plastic cover. Slide the cover to the left and
slide the actuator to match the voltage in your country. Once the voltage
is set, tighten back the two screws.
COMPLETELY DISCONNECT POWER CORD FROM AMPLIFIER
BEFORE ATTEMPTING TO CHANGE AC VOLTAGE SETTINGS!
28. THE B-52 MATRIX-2500 LOUDSPEAKERS ARE NOT DESIGNED
FOR TEMPORARY OR PERMANENT SUSPENSION. ANY ATTEMPT
TO SUSPEND THE SUBWOOFER OR SATELLITE SPEAKERS OF THE
MATRIX-2500 COULD RESULT IN INJURY OR DEATH.
To prevent electric shock, do not use a polarized plug with an extension
cord, receptacle or other outlet unless the blades can be fully inserted to
prevent blade exposure.
THIS SYMBOL IS INTENDED TO ALERT THE USER TO THE PRESENCE
OF IMPORTANT OPERATING AND MAINTENANCE (SERVICING)
INSTRUCTIONS IN THE LITERATURE ACCOMPANYING THE UNIT.
APPARATUS SHALL NOT BE EXPOSED TO DRIPPING OR SPLASHING
AND THAT NO OBJECTS FILLED WITH LIQUIDS, SUCH AS VASES,
SHALL BE PLACED ON THE APPARATUS.
4
HEARING DAMAGE AND PROLONGED EXPOSURE TO
EXCESSIVE SPLs
The B-52 MATRIX-1500 system is capable of producing extremely
loud volume levels that can cause permanent hearing damage to
performers, production crews or the audience. Hearing protection i
s recommended during long-term exposure to high SPLs
(sound pressure levels). Remember, if it hurts, it is definitely too loud!
Long term exposure to high SPLs first causes temporary threshold
shifts; limiting your ability to hear the actual loudness and exercise
good judgment. Repeated long term exposure to high SPLs will cause
permanent hearing loss.
Please note the recommended exposure limits in the accompanying
table. More information about these limits is available on the US
government Occupational Safety and Health (OSHA) website
at: www.osha.gov
Permissible Noise Exposures (1)
Duration
per day, hours
8
6
4
3
2
1.5
1
0.5
0.25 or less
RISK OF
ELECTRIC SHOCK
DO NOT OPEN
CAUTION: To reduce the risk of electric shock, do not
remove chassis. No user - serviceable parts inside.
Refer servicing to qualified service personnel.
AVERTISEEMENT: Pour réduire les risques d'incendie et
d'électrocution, ne pas exposer ce matérial à la pluie ou
à l'humidité.
Sound level dBA
slow response
90
92
95
97
100
102
105
110
115
RISQUE DE CHOC
ELECTRIQUE NE
PA S OUVRI R