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Bowers & Wilkins CCM7 Manual De Instrucciones página 5

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  • ESPAÑOL, página 26
4.2 If speaker cable is already present in the ceiling
space, pull the cable down through the aperture. If
speaker cables are not already installed this should be
done at this stage. It is likely that you will need to gain
access through the floor above to route the cables
through the ceiling space.
Leave enough spare cable through the aperture to
ease connection to the speaker back box, but not so
much that it is likely to buzz or rattle when pushed
back up into the ceiling space. Approximately 1.0m (40
in) is appropriate.
Note: Always use high quality, low resistance
speaker cable. Low resistance is especially
important if the length of cable from amplifier to
speaker exceeds 5.0m. Your local Bowers and
Wilkins retailer will be able to offer advice on
speaker cable selection if required.
4.3 CCM7 Series speaker back boxes are fitted with
a safety hook feature that enables a safety chain or
cable to be attached and then secured to a structural
element within the ceiling – typically a stud (joist). We
strongly recommend the safety hook feature is used.
The diagram above illustrates the use of the safety
hook.
4.4 Now connect the speaker cable to the spring
terminals on the side of the back box, first looping the
cable around the strain relief bar. A second person
will be required to hold the back box while the cable
is connected. The diagram above illustrates the cable
connection.
Ensure that the speaker connection polarity is
correct: the cable connected to the positive terminal
on the amplifier should be connected to the red
spring terminal on the back box. Similarly, the cable
connected to the negative terminal on the amplifier
should be connected to the black spring terminal on
the back box.
Note: If an amplifier is already connected to the
cable it should be switched off while connections
are being made to the back box.
4.5 With the back box connected it may be lifted up
into the ceiling aperture. Correct back box orientation
must be established at this stage: the red arrow on
the back box flange should be pointing towards the
listening area.
Ensure that the clamps are retracted so that they will
pass through the aperture then lift the back box up so
that the flange is flush on the ceiling. Take care that the
cable is not trapped. One person should hold the back
box in place while a second tightens the eight clamp
screws. The diagram above illustrates insertion of the
back box.

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