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13
SUB 1000 F
User manual
Connections
Using the "low-level" RCA inputs
When a 2-channel amplifier with pre-out line outputs are used, the subwoofer should always
be connected to the stereo RCA inputs "Left/Right LINE INPUTS" (fig. A).
Using the LFE input
When a multi-channel audio/video amplifier is used, the subwoofer’s single LFE input should
be connected to the audio/video amplifier’s "Subwoofer" output if there is one (fig. B).
Positioning the subwoofer in the listening room
Contrary to loudspeakers, which have to be placed at a sufficient distance from the walls and
corners of the listening room, we recommend positioning the subwoofer in a corner (fig. C,D).
If the subwoofer is positioned against only one wall or far away from the walls, the very long
wavelengths of the low frequencies will cause the random excitation of room resonances. The
frequency response will not be linear and the quality of the bass will be seriously affected
(lack of depth, tinny sound, poorly defined and/or poorly held bass, difficult or impossible
overlap crossover with other loudspeakers).
By placing the subwoofer in a corner, the room resonances will be excited in a more linear and
predictable way. Not only will bass perception be optimal, but this arrangement will also make
it possible to boost the bass level by + 6 dB (fig. E).
If for practical reasons you aren’t able to place the subwoofer in a corner, experiment positioning
the subwoofer in different places within the room until you find the best compromise.
Generally speaking, it is better to place the subwoofer towards the front of the room.
As the frequency ranges involved are in principle omnidirectional, the bass is not affected by
objects or furniture placed between the subwoofer and the listening point.
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