Heco ALEVA 400 Mode D'emploi page 10

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HECO ALEVA - BI-WIRING AND BI-AMPING
Connector panel on the Heco Aleva loudspeakers:
The connector panels on the Aleva 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 2 dB 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
+2 dB treble adjustment active. The bridge can be switched to the linear setting by
unscrewing the corresponding terminals. (Fig. 2)
The terminals have to be removed for bi-wiring and bi-amping mode. Fig. 3 and fig.
4 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 +2 dB setting is recommended for rooms with heavy
upholstered furniture and curtains, for example, which have a muffling effect.
THE HECO ALEVA 400 AND 200 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.
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:
Aleva 400: 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.
Aleva 200: 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.
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