Heco CELAN REVOLUTION 9 Mode D'emploi page 9

THE HECO CELAN REVOLUTION LOUDSPEAKERS IN STEREO MODE
In the ideal configuration the speakers and the listening position should form an equilateral triangle.
When the left and right speakers are the same distance from the listening position their sound arrives at
the same time, resulting in a harmonious, natural music reproduction. (Fig. 3)
There should be a clear line of sight between the loudspeakers and the listening position. Any sound-
absorbing or reflecting obstacles in the path will distort the sound. When you install the loudspeakers
the following distances should be maintained:
Floorstanders: at least 20 cm away from the rear wall and at least 30 cm from the side walls. This will
prevent excessive emphasis of the bass range.
Bookshelf speakers: shelf loudspeakers should also be as free-standing as possible, the distance to
the sides and rear to walls and items should be at least 10 cm, the tweeters should be located at ear
height.
Spikes (floorstanders): you should use the supplied spikes when setting the speakers up. This isolates
them from the supporting surface, preventing unpleasant resonance effects. You can choose between
metal and hard rubber spikes for the standing speakers. The spikes are screwed into the threaded
bushes on the bottom of the speaker.
The HECO CELAN REVOLUTION loudspeakers are ideal for use with the CELAN REVOLUTION SUB 32A
active subwoofer. Fig. 4 shows a method of connection. Please also refer to the subwoofer's and your
amplifier's operating instructions.
HECO CELAN REVOLUTION LOUDSPEAKERS AS A FRONT OR REAR LOUDSPEAKER
The front loudspeakers are positioned at ear height on the left and right as equidistant from the television
as possible. The rear loudspeakers are placed at ear height or a little above on the left and right besides
or better behind the listening position. (Fig. 5)
CONNECTOR PANEL ON THE HECO CELAN REVOLUTION LOUDSPEAKERS / BI-WIRING AND
BI-AMPING
The connector panels on the CELAN REVOLUTION speakers are equipped with 5 terminal screws,
enabling bi-wiring/bi-amping in addition to conventional connection to an amplifier. The upper terminals
are connected to the treble and mid-treble side of the crossover and the lower terminals to the bass
side. An additional connector terminal enables a 2dB treble boost option.
Bi-wiring means using separate cables to carry the high and low audio frequencies. Bi-amping takes
this idea one step further and uses separate power amplifiers as well as separate cables for high and
low frequencies. Bi-amping in particular produces an additional improvement in sound reproduction
quality.
For conventional connections, metal bridges are installed as standard to make the +2dB treble
adjustment active. The bridge can be switched to the linear setting by unscrewing the corresponding
terminals. (Fig.6)
The metal bridges have to be removed for bi-wiring and bi-amping mode. Fig. 7 and fig. 8 show the
connection to the amplifier(s).
The right treble setting depends on the room, the positioning of the speakers and, of course, personal
taste. The +2dB setting is recommended for rooms with heavy upholstered furniture and curtains, for
example, which have a muffling effect.
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