Bi-Wiring

Under bi-wiring ( dt: double wiring ) refers to the operation of a loudspeaker with two separate speaker cables for one hand, the bass and the other hand, the mid-high branch of the speaker on a full-or power amplifier. To this end, the speaker in a position must be that Hoch-/Mittelton-Chassis and the bass drivers to drive separately, ie have separate input jacks for the bass and mid-high branch of the crossover.

The advantage of this system is called that the two speaker systems are better from each other "decoupled" by bi-wiring for high and low frequencies and could not influence each other. This should be possible to improve or change the sound of the amplifier - speaker combination. In comparative listening tests can not prove such sonic improvements. Moreover, this explanation is not tenable from a physical standpoint, since both systems are still connected to each other via the output of the amplifier. Compared with the single- wiring the length of the connection cable between the two systems is only magnified. However, since commercially available speaker cables usually have a very high conductivity, and at the same time a very low impedance, there will be no significant decoupling of the systems.

Occasionally, is also claimed by bi-wiring the noise can be reduced. According to this claim, the useful signal, which is identical on both lines would pass unaltered, while the noise would cancel each other out. This claim is physically untenable, as it is to the sound of a stochastic process, the noise signals from the two cables so are completely independent. Extinction, also called destructive interference, however, can only take place between coherent signals.

Physically can only result in a very small change in the cable impedance in the vicinity of the transition frequency between the low and tweeter system through bi-wiring. In commercially available speaker cables, but the resulting level differences are far below the threshold of perception. Moreover, should such a change - you should hear it because - not necessarily lead to an improvement in the sound, a deterioration is possible.

As a more complex variant, the so-called tri-wiring, which each have their own cable is used for bass, midrange and high frequency signal exists.

Pictures of Bi-Wiring

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