Cabasse MC40 Betriebsanleitung Seite 9

e n g l i s h
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 pul-
ling its top end in order to cut off its magnetic link with the
magnets to the front panel. To get the grill back in place, posi-
tion 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 pre-
maturely the veneer covering the magnets on the front panel of
the speaker.
We recommend this protection to be kept on to prevent acci-
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dental damage to the drivers
Powerful drivers generate magnetic fields that can extend
beyond the boundaries of the speaker cabinet. We recom-
mend 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 cha-
racteristics 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 impor-
tant 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 sit-
ting position.
No solid object or piece of furniture should be placed between
the speakers and the listener. An effect of mask, even partial dis-
turbs 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.
Optimal positioning for a 2.1
or stereo with a subwoofer system
For a stereo listening with 2 speakers or 2 satellites and 1 sub-
woofer, 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
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5
from 80 to 200 Hz. However to obtain the best results, it is
always necessary to carry out tests according to the acoustic
of the room.
Optimal positioning for a 5.1
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or home theatre system
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. Theo-
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 prin-
cipal speaker should be placed above the screen if the main
speakers are below it, and below the screen if the main spea-
kers 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
Cable section
Lenght between
amplifier and loudspeakers
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 resis-
tance. 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
recommanded
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
Attention
before operating the unit,
be sure that the
operating voltage
of your unit is identical
with that of your local
power voltage.