Ex-Pro High quality transparent speaker cable supplied in optional lengths. This high quality speaker cable is suitable for all HiFi applications including home cinema wiring and wiring in car audio applications. Also suitable for connecting bi wired speakers, just use two lengths. This speaker cable is transparent in line with modern styles of speaker cable and it is extremely tough and durable. The cable is polarised by the stripe on one of the cores. The polarised core would normally be used for the positive speaker connection but it can be used for the negative connection as long as you are consistent with this in the connections to all the speakers in your system install. Pure Linear Oxygen Free Copper Cable - The difference - Low resistance. There are two main speaker cable types (We sell both) OFC Copper and CCA Copper (Which is Copper Coated Aluminium). CCA is cheaper but has greater resistance meaning let power to the speaker coil, less power means lower output [of course depending on length also]. This cable is PURE COPPER - which means the whole cable is copper through and through - Low resistance, better connections. The thicker the wire (the lower the AWG Gauge number) the less resistance there will be through the wire. Available in Lengths upto 100m, Select Type and Length Required.Product properties Specifications Conductor diameter 2 x 2.5mm Multiple Length [Select size and required length from options available] Cable design Flat Outside material PVC PURE Copper Transparent Cable Audio type Stereo Cable type Speaker Diameter 8.6mm x 4.3mm