8
SAFETY AND PRECAUTIONS
•
CAUTION:
Before using this product read carefully the following safety instructions. Take a look of this manual entirely and preserve it for future
reference.
When using any electric product, basic precautions should always be taken, including the following:
– To reduce the risk, close supervision is necessary when the product is used near children.
– Protect the apparatus from atmospheric agents and keep it away from water, rain and high humidity places.
– This product should be site away from heat sources such as radiators, lamps and any other device that generate heat.
– This product should be located so that its location or position does not interfere with its proper ventilation and heating dissipation.
– Care should be taken so that objects and liquids do not go inside the product.
– The product should be connected to a power supply mains line only of the type described on the operating instructions or as marked on the
product. Connect the apparatus to a power supply using only power cord included making always sure it is in good conditions.
–
WARNING:
The mains plug is used as disconnect device, the disconnect device shall remain readily operable.
– Do not cancel the safety feature assured by means of a polarized line plug (one blade wider than the other) or with a earth connection.
– Make sure that power supply mains line has a proper earth connection.
– Power supply cord should be unplugged from the outlet during strong thunderstorm or when left unused for a long period of time.
– Do not place objects on the product’s power cord or place it in a position where anyone could trip over, walk on or roll anything over it. Do not
allow the product to rest on or to be installed over power cords of any type. Improper installations of this type create the possibility of fire hazard
and/or personal injury.
– This product in combination with loudspeakers may be capable of producing
sound levels that could cause permanent hearing loss. Exposure to extremely
high noise levels may cause 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 period of time.
The U.S. Government’s Occupational Safety and Health Administration (OSHA)
has specified the permissible noise level exposures shown in the following chart.
According to OSHA, any exposure in excess of these permissible limits could
result in some hearing loss. 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 permanent hearing loss if exposure is in excess of the limits set forth
here. Keep your's attention that childrens and pets are more suscetible to excessive noise levels.
IN CASE OF FAULT
• In case of fault or maintenance this product should be inspected only by qualified service personnel when:
– There is a flaw either in the connections or in the supplied connecting cables.
– Liquids have spilled inside the product.
– The product has fallen and been damaged.
– The product does not appear to operate normally or exhibits a marked change in performance.
– The product has been losted liquids or gases or the enclosure is damaged.
• Do not operate on the product, it has no user-serviceable parts inside, refer servicing to an authorized maintenance centre.
TROUBLESHOOTING
No Power
• The amplifier's "POWER" switch is off.
• The amplifier's MAINS circuit breaker is down.
• Make sure the mains AC outlet is live.
• Make sure the mains plug is securely plugged into mains AC outlet.
No Sound
• Is the input LEVEL control for the channel turned up?
• Is the SIGNAL LED illuminated? If not check if your signal level is too low or check the signal cable, mixer and other
equipment setting and cabling.
• Are you sure your signal cables works properly? check it using a cable tester or replacing with a new one.
• Is the speaker cable connector correctly connected? if it is a SPEAKON turn it clockwise until it clicks.
• Are you sure your power cable works properly? check it using a cable tester or replacing with a new one.
No Sound and the
Amplifier gets too hot
(LED TEMP on)
• The amplifier temperature protections trips, re-locate the amplifier in a more ventilated location.
No Sound and
Protection trip
(LED PROTECT on)
• Could be a possible short circuit at the amplifier loudspeakers outputs, the speaker’s inputs or in the cabling. Locate
and remove the short circuit.
•The impedance of the loudspeakers connected is too low. If more speakers are connected in parallel at the outputs
reduce this number disconnecting a speaker.
• If no load connected the protection trips the same, a DC voltage has been detected in the amplifier’s output circuit and
you have to contact you nearest service assistance center to repair the amplifier.
Distorted Sound
• Input signal level is too high. Turn down your level controls.
NOTE: The amplifiers should never be operated at a level which causes the amplifier LIMIT LEDs to illuminate constantly.
Different channel
level
• Check if are using a balanced cable for one channel and an unbalanced one for the other, as this would cause a
considerable difference in channel levels.
• Be sure that your loudspeaker system is fully connected and both loudspeakers have the same impedance.
Duration Per Day
In Hours
Sound Level dBA
Slow Response
Typical
Example
8
90
Duo in small club
6
92
4
95
Subway Train
3
97
2
100
Very loud classical music
1.5
102
1
105
Traffic noise
0.5
110
0.25 or less
115
Loudest parts at a rock concert
