Cabasse MC40 Betriebsanleitung Seite 7

the stability of the speaker while limiting resonance coming
from certain types of grounds like wood floors.
Speakers are delivered with a front grille to protect drivers. It is
possible to use them without this front grille, by gently pulling
its top end in order to cut off its magnetic link with the ma-
gnets to the front panel. To get the grill back in place, position
it in front of the speaker and approach it to the front panel
until the magnetic link is effective. These operations must be
carried out very smoothly in order not to damage prematurely
the veneer covering the magnets on the front panel of the spea-
ker.
We recommend this protection to be kept on to prevent acci-
dental damage to the drivers
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Powerful drivers generate magnetic fields that can extend
beyond the boundaries of the speaker cabinet. We recommend
you keep magnetically sensitive articles (TV, computer screen,
computer discs, audio and video tapes, swipe cards...) at least
1.5 ft (50 cm) away from the speaker. Cabasse centre speakers
or the ones marked «TV» are not concerned with this, being
magnetically shielded.
Positioning speakers in a room
In addition to vertical position of the speakers themselves, their
location in the listening room, as well as the acoustical charac-
teristics of the room, are also very important. As it is impos-
sible to indicate a typical location of speaker systems without
a few tests, we suggest several general rules that are important
to apply in order to obtain the best listening results.
Optimal positioning for a 2.0 or stereo system
For the ideal positioning of your speakers follow diagram.
If «d» is the distance between the two speakers, this distance
must be higher than 5 ft (1.5 m) and the two speakers must be
at equal distance from the listening area which forms with
them an equilateral triangle.
The drivers must be directed towards the listening area.
The speakers should be located so that their diffusion follows
the longest dimension of the room.
Generally speaking it is better to avoid putting the speakers in
the corners of a room as this amplifies the low frequencies and
tends to enhance the room resonances. If possible it is better
to place the speakers at least 8 inches (20 cm) from the walls.
Moreover, in order to obtain a more accurate frequency res-
ponse, it is recommended to raise a compact speaker from 12
to 16 inches (30 to 40 cm) above the floor by placing them on
stands. The tweeters of the speakers must be roughly at the
same height of the listener's ear when the listener is in sitting
position.
No solid object or piece of furniture should be placed between
the speakers and the listener. An effect of mask, even partial
disturbs completely the sound reproduction as it attenuates
the high frequencies and also, in most cases, the midrange fre-
quencies.
Placing the speakers in niches is not recommended. Unless
designed for this application, bookshelf placement will alter
the frequency response of the speaker, especially in the low fre-
quencies. If a bookshelf location cannot be avoid, the speaker
should be set up to minimize various resonance, and the visible
part of the grille must be outside the niche.
.
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Optimal positioning for a 2.1
or stereo with a subwoofer system
For a stereo listening with 2 speakers or 2 satellites and 1
subwoofer, we recommend you to place the subwoofer in the
front listening area. The placement of the subwoofer against a
wall reinforces the low frequencies and limit the reflections from
80 to 200 Hz. However to obtain the best results, it is always ne-
cessary to carry out tests according to the acoustic of the room.
Optimal positioning for a 5.1
or home theatre system
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Setting up a multi-channel Audio-Video system requires great
care when positioning the specific AV speakers.
The centre speaker should be placed as close as possible to the
screen and where it sounds best from your listening spot while
offering the optimal picture/dialogues cohesion. The retically,
the screen should be located within a virtual triangle formed
by the acoustical centres of the main speakers and the centre
speaker. Practically speaking, this means that the principal spea-
ker should be placed above the screen if the main speakers are
below it, and below the screen if the main speakers are above.
The centre speaker should also, if possible, be set slightly back
from the others, so that it is located at the same distance from
the listener as the main speakers.
The rear speakers or surround should be placed against the
side walls, at listening height. They should not be positioned far
behind the listening zone.
The subwoofer should be placed in the front listening area, its
position against a wall reinforces the extreme low register and
limits the reflections between 80 and 200 Hz. However to obtain
the best result, it is always necessary to carry out tests according
to the acoustics of the room.
Your AV processor enables the adjustment in level and delay of
each of the 5/6/7 channels of your system. Fine-tuning is neces-
sary to obtain a perfect sound stage.
Turn off all the amplifiers before interconnecting them to the
loudspeakers. In order to connect loudspeakers properly, it is
most important to keep in mind the following two factors: cable
section and phase.
CONNECTION
Lenght between amplifier
Cable section
To get the full sonic
potential of Cabasse
loudspeakers and avoid
power losses, the cables
connecting the speakers
to the power amplifier
must have the lowest possible electrical resistance. To help you
in choosing the correct cable gauge, follow diagram.
Phase
In order to maintain the phase relationship and frequency
balance of the loudspeaker system, both loudspeakers must
be properly connected to the power amplifier. When properly
connected, the cones of the drivers of both loudspeakers will
move in the same direction when driven by identical speakers
will move in the same signals. If the cones move in opposite
directions, the resulting out of phase signals will create a per-
ceptible power loss, particularly in the low frequencies. The ste-
reophonic message will also be degraded. Amplifier and speaker
manufacturers typically indicate connection polarity in one of
two ways: red and black or plus and minus. In either case, always
connect red or plus to red or plus and black or minus to black
5
recommanded
and loudspeakers section
4.5 m 1.5 mm
2
6 m 2 mm
2
7.5 m 2.5 mm
2
9 m 3 mm
2
12 m 4 mm 2