Running-In Period - Focal Electra 1000 Be II User Manual

ElEctra 1000 BE II
U s e r m a n u a l
9
Positioning
The loudspeakers have been engineered to deliver the most faithful sound reproduction, whether they are used for music
or home cinema. In order to enhance their performance, to guarantee a high quality of listening, sound image and tone
balance, it is important to note the following basic rules.
The listening area must be located at the summit of an equilateral triangle whose two other points of insertion
are determined by the position of each speaker. Nevertheless it is possible to modify these distances to find an ideal
compromise according to the particular disposition of the room (fig.A).
Each loudspeaker must be placed at the same height and on the same floor plan. The tweeter should be at the
same height as the listener's ear, when the listener is in their usual listening area (fig.B).
Avoid placing the loudspeakers too close to the room's corners or walls. This will induce some unwanted room
resonance and artificially increase bass response. On the contrary, if the bass level proves to be insufficient, it is possible
to move the speakers closer to the walls to adjust the bass level (fig.C).
Optimization
For perfectionist people, we will give an optimum positioning rule: If A is the determined distance between the floor and the
middle of the two woofers (X), C is the distance between X and the side or back wall, then the distance B is found with the
equation B2 = AC.
• Example: The woofer center is at 50cm from the floor (A= 50cm). We decide that the distance between X and the side
wall will be 72cm (C = 72cm), the loudspeaker will then have to be placed at 60cm from the back wall. B2= 50 x 72 =
3600 (fig.D). B = √3600 = 60cm.
Connections
The Electra Be II input sockets ensure reliable multipurpose connections for stripped cables as well as for plugs.
It is imperative to respect the connector polarity of both the loudspeaker and amplifier. The positive terminal "+" must
be connected to the corresponding (matching) amplifier's terminal and the negative terminal "-" to the negative terminal
(fig.E). Stereo image, soundstaging and bass perception would be seriously compromised if these conditions were not
respected.

Running-in period

The drivers used in the loudspeaker are complex mechanical devices and require run-in period before they deliver their best
performance. They must get adapted to the tem-perature and humidity conditions of their environment. This breaking-in
period depends on the encountered conditions and can last several weeks. In order to shorten this period, we advise you
to let your loudspeakers operate for about twenty hours at medium level, playing standard musical programmes, but with a
large amount of bass.
Once the components of the loud-speakers are completely stabilized, it is possible to enjoy the real performance of your
loudspeakers.
User instructions
The sound rendition of the loudspeaker strongly depends upon the listening room acoustics, the place of the loudspeakers
and the listening area. These factors can be modified in order to correct or enhance a desired effect.
Should the soundstage be imprecise or not centred, try to move the loudspeakers closer to each other.
Harsh or aggressive sound means that your listening room is probably too reflective. Try to use any absorbing materials
(such as tapestries, sofa, wall coverings, curtains...) combined with reflective materials to absorb or diffuse resonances.
Should the sound be "flat" or muffled, there are too many absorbing materials in the listening room. The sound appears
to be closed-in, with a narrow stereophonic image. Try to find a better compromise between absorbing and reflective
materials within your listening room.
Generally the wall to the rear of the speakers should be made up of reflective materials so that the sound image exhibits
satisfying volume and width. On the contrary the wall on the rear of the listener should be absorbing in order to avoid
reflections damaging the perception of the stereo soundstage. These reflections may limit the impression of depth of the
sound image. Furniture, such as bookshelves should ideally be placed along the side walls in order to diffuse sound waves
and to prevent some frequencies from being amplified, especially in vocal range (it removes "flutter echo").