The star-quad design for microphone cables, where 4 conductors are used in pairs, with a short lay length, to cancel out the effects of external electromagnetic noise, is well known in demanding applications such as TV, video and theatre where thyristor lighting control systems are in use. The cables are, of course, also suitable for line level signals. The cables are extremely flexible, using fine stranded copper cores and soft PVC jacketing, and handling noise is minimised by the use of cotton fillers. An irradiated polyethylene core insulation provides a low capacitance dielectric, and its high temperature resistance minimises run-back during soldering.
L-4E5C version is a narrow profile version, very popular as a boom cable.
L-4E5AT is a foil screened installation version of this design – see separate details.
Multi starquad cables (L-4E3-P series) are available to special order, supplied as full reels of 100 metres.
||40/0.08mm (0.2mm²) (L-4E6S), 30/0.08mm (0.15mm²) (L-4E5C)
||Irradiated polyethylene, two blue, two white
||Four wires twisted together with lay length 20mm (L-4E6S), 18mm (L-4E5C)
||Tinned copper braid, 95% coverage
||Soft PVC, 6.0mm OD (L-4E6S), 4.8mm OD (L-4E5C)
||5.0kg/100m (L-4E6S), 3.4kg/100m (L-4E5C)
||Available in any multiple of 1 metre.
||White + White for A leg
||Blue + Blue for B leg