6
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.
– This product 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 children and pets are more susceptible 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 lost 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 Sound
• Is the loudspeaker cable connected?
• Is the SPEAKON cable connector correctly inserted? turn it clockwise until it clicks.
• Are you sure your power cable works properly? check it using a cable tester or replacing with a newone.
As soon as the music gets loud,
the high frequency shuts down
• The HF driver protection trips to protect the HF driver from excessive signal: turn down the volume and
mid/high tone controls.
Distorted Sound
• Input signal level is too high. Turn down your level controls.
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.
Noise / Hum
• Enable GND LIFT button on rear panel, if the problem persist press all GND LIFT buttons for all system's
amplifiers.
• Whenever possible, preferably use only balanced cables. Unbalanced lines may also be used but may result
in noise over long cable runs.
• Sometimes it helps to plug all audio equipment into the same AC circuit so they share a common ground.
CE CONFORMITY
• Proel products comply with directive 2004/108/EC (EMC), as stated in EN 55103-1 and EN 55103-2 standards and with directive 2006/95/CE
(LVD), as stated in EN 60065 standard.
• Under the EM disturbance, the ratio of signal-noise will be changed above 10dB.
PACKAGING, SHIPPING AND COMPLAINT
• This unit package has been submitted to ISTA 1A integrity tests. We suggest you control the unit conditions immediately after unpacking it.
• If any damage is found, immediately advise the dealer. Keep all unit packaging parts to allow inspection.
• Proel is not responsible for any damage that occurs during shipment.
• Products are sold “delivered ex warehouse” and shipment is at charge and risk of the buyer.
• Possible damages to unit should be immediately notified to forwarder. Each complaint for package tampered with should be done within eight
days from product receipt.
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
