Focal PROFILE Portable Speaker - Manual (Page 7)

Magnetic disturbance
In home theater systems, the magnetic
radiation of the loudspeakers must be
taken into consideration.
Floor-standing speakers which are
fully magnetically shielded, all other
loudspeakers generate a magnetic
leak that can interfere with household
appliances, some of which are
sensitive to this phenomenon. It is
strongly advised not to place front
loudspeakers closer than 50cm to
your TV screen.
Frame geometry as well as colours
can be severely distorted by a
magnetic field if the loudspeaker is
placed to close to the TV. In case
of problems, some TV screens (or
computer monitor) feature a degauss
control, but not systematically.
07
Home theater
English
Choice of speakers
Yours
loudspeakers have been
engineered to work with stereo
systems as well as with home theater
systems. If you already own a pair
of stereo Profile loudspeakers and
wish to purchase a complete home
theater system, it is of the utmost
importance that you use the central
and effect loudspeakers of the same
product line. It is the sole possible
condition to bring to your system a
perfect tonal homogeneity and a
realistic and coherent reproduction
of tri-dimensional effects within the
listening room.
Central channel placement
Central channel speakers should
be placed close to the TV-screen to
obtain a proper placement and a
realistic reproduction of the dialog.
They could be placed below or above
the TV-screen if your TV-unit permits
(fig. F, G).
If a standart projection screen is used,
the central channel speaker must be
placed under the screen.
If an acoustically transparent pro-
jection screen is used, the central
channel speaker can be placed
behind and at the bottom of the
screen (fig. H).
Effect channel speakers‘s place
The soundtrack mix for a film or music
encoded in multichannel format is
very complex and allows the listener
to benefit from a wide range of special
sound effects, which require the use of
effect channel speakers. In order to
obtain a realistic 3D soundstage, the
placement of the speakers is decisive,
even when confronted with a restrictive
disposition of the listening room.
For enhanced performances, the fol-
lowing elements should be noted.
Avoid placing the effect speakers
too far from the listening area
otherwise the sound perception will be
altered. In order to obtain surround
effects, with great sound density we
advise you to place the speakers
against the sidewalls on each side of
the listening room (fig. I, J).
Place the effect speakers at a
suitable height, slightly above the
listener’s ears (fig. K).
A
/ V amplifiers include compen-
sation systems, which allows to
set the delay applied on each
channel. In certain conditions, the
distance between each speaker and
the listening area may vary.
The latest high-level film soundtracks
are now mixed in 6.1. This system
requires the use of one or two
central surround channel speakers
(depending on the amplifier) which
should be placed behind the listening
area. If two effect speakers are used
simultaneously, make sure that they
are not too far from each other (less
than one meter; 40 inches) in order to
obtain the best results.
notice profile gb 6 12/04/05, 12:06:08