Up to now little importance has been given to the interference collected by the speaker cables for passive acoustic diffusers. In fact, the currents induced on the cables, produced over the air by electromagnetic waves, are enormously lower than that generated by the amplified signal. This does not apply in fixed installations, when the cables are adjacent to the power cables for many meters.

A problem also felt in the construction of 70V and 100V systems in which hundreds of meters of line can be developed. The induced disturbance is obviously in low frequency; therefore we have proceeded to realize a shield in tinned copper braid. Inside the cable we find a pair of twisted conductors, PVC insulated and made of very thin red copper. The external covering sheath is made of flame retardant PVC, as required by the regulations for fixed installation installations.

Specification

• Fields of application: Connections of passive loudspeakers for fixed installations
• Conductors: Copper 16 AWG = 29x0.25 mm - Flexible conductors in Class 5 electrolytic copper in compliance with IEC 60228
• Conductor section: 1.5 mm 2 / AWG16
• Construction: two concentric short-pitch twisted conductors
• Insulation: Flame resistant PVC ø 2.30 mm Blue / Red
• Shield: Braided tinned copper - coverage 100%
• Sheath: flexible PVC flame resistant 60 shore - Complies with the IEC 60332.3 standard
• External diameter: ø 6.30
• Conductor electrical resistance @ 20 ° C: 14 Ohm / Km
• Electrical capacity @ 1 KHz: conductor / conductor: 82 pF / mt
• Working temperature: -30 ° C / + 80 ° C in fixed laying
• Minimum bending radius: 4 x outer diameter
• Weight: 62.00 Kg / Km