RFC MR 52WEN User Manual page 5

9. RCF S.P.A. strongly recommends this product is only installed by
professional qualified installers (or specialised firms) who can ensure a
correct installation and certify it according to the regulations in force.
The entire audio system must comply with the current standards and
regulations regarding electrical systems.
10. Mechanical and electrical factors need to be considered when installing
a professional audio system (in addition to those which are strictly acoustic,
such as sound pressure, angles of coverage, frequency response, etc.).
11. Hearing loss
Exposure to high sound levels can cause permanent hearing loss. The acoustic
pressure level that leads to hearing loss is different from person to person
and depends on the duration of exposure.
To prevent potentially dangerous exposure to high levels of acoustic pressure,
anyone who is exposed to these levels should use adequate protection
devices.
When a transducer capable of producing high sound levels is being used, it is
necessary to wear ear plugs or protective earphones.
See the technical specifications in the instruction manual for the maximum
sound pressure the speaker is capable of producing.
12. To ensure a correct sound reproduction, speaker phase is to be respected
(speakers are connected respecting the amplifier polarity).
This is important when speakers are installed adjacent one another, for
instance, in the same room.
Make sure speaker lines are not shorted before turning the amplifier on.
13. To prevent inductive effects from causing hum, noise and a bad system
working, speaker lines should not be laid together with other electric cables
(mains), microphone or line level signal cables connected to amplifier inputs.
14. The speaker cable shall have wires with a suitable section (twisted, if
possible, to reduce inductive effects due to surrounding electro-magnetic
fields) and a sufficient electrical insulation. Refer to local regulations since
there may be additional requirements about cable characteristics.
15. Install this speaker far from any heat source.
16. Do not use solvents, alcohol, benzene or other volatile substances for
cleaning the external parts of this product. Use a dry cloth.
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