e n g l i s h
PACIFIC 3 SA
■
Moreover, in order to obtain a more accurate frequency
response, 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
frequencies. 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.
SPEAKER-AMPLIFIER CONNECTION
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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 resis-
tance. To help you in choosing the minimum 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
perceptible power loss, particularly in the low frequencies. The
stereophonic 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 or minus. Connections should be identical for
both channels. To check that the speakers are in correct pha-
se, switch the system to mono while music is being played. if the
amplifier does not have a phase inversion switch, it will be
necessary to change over the connections on one only of the
loudspeakers. If in correct phase, the image should be
distinctly located between the loudspeakers with a slight loss of
bass and low midrange level. If the image is confused and not
centrally located and there is a drastic loss of bass and low
midrange level, recheck your connections.
Maximal lenght
betweem recommended
Section
amplifier and loudspeakers
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
UNPACKING
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After opening the top carton flaps, fold the carton flaps right back,
remove the cardboard sheet, the bag of accessories and the foam
half-shells protecting the speakers and the front grille. Then pull out
the grill and the speaker. We suggest you to retain the packing for
future use.
These speakers are very heavy, so 2 persons minimum are
required to unpack and re-pack them.
POSITIONING
Speakers positioning
Our speakers have been designed to function in a vertical
position. Under these conditions, the polar response is most uni-
form
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.
The Pacific 3 SA model is delivered with a set of decoupling
spikes
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. These accessories are to be screwed in the inserts on
the base of the speakers after having removed the caps (turn
them anti-clockwise). Adjust the height of the spikes by using
the M4 Allen key delivered with the speakers. These accessories
ensure 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
magnets 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 speaker
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.
Powerful drivers generate magnetic fields that can extend
beyond the boundaries of the speaker cabinet. We recom-
mend you keep magnetically sensitive articles (CRT TVs and
computer monitors, computer discs, audio and video tapes,
swipe cards...) at least 1.5 ft (50 cm) away from the speaker.
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
characteristics of the room, are also very important. As it is
impossible 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
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■
For the ideal positioning of your speakers follow diagram.
If «d» is the distance between the two speakers, this distan-
ce 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.
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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.
CabPACIFIC3-mp8:Cab Altura MC notice 031108 19/07/10 17:24 Page 8
