BLACK RHODIUM: Are your speaker cable wires too close together to appreciate the quality of your hi-fi system?

Basic Electrical theory tells us that when two parallel wires are placed close to each other, the current flowing in one wire will affect the current carrying performance of the other. This is known as the 'Proximity Effect'.

In most loudspeaker cables, the positive and negative wires are often spaced closely together, the distance between the conductors being no more than twice the thickness of the inner insulating material.

The closer the two speaker wires are to each other, the greater the magnetic field which each wire places on the other, and the greater the level of audible distortion in the speaker cable.

When two wires are carrying equal and opposite currents, the currents in each conductor are concentrated in the sides closest to the other conductor.
The overall effect of the magnetic field is to increase the overall resistance of the wire and this effect increases as the frequency of the current in the other wire increases.

The effect of the variations in resistance of the wire due to magnetic fields is to add small noise and distortion signals to the music and hence distort the sound.

In cables where this form of distortion is evident, the distortion can be reduced by increasing the distance between the conductors. A typical speaker cable with insulation thickness of 0.6mm alongside Black Rhodium Twist which has a 1.2mm insulation thickness.

Both cables have the same 24 x 0.2mm diameter conductors, and from the feedback we have received from dealers, end users and the press it is clear that the techniques used in Twist deliver a far higher quality in sound.