This cable is used to make the electrical connection between loudspeakers and audio amplifiers, and also used for the internal wiring of the speakers themselves.
All Coboc speaker cables utilize high-conductivity 99.95% pure, oxygen-free copper.
One side of the wire insulation is marked with a blue stripe, making it quick and easy to identify the correct audio signal polarity.
Coboc 18-gauge speaker wire comes wrapped around a hard spool that makes installation easy and convenient.
When you're running wire inside your walls, it's important that you use speaker cable that's approved for in-wall runs. This cable's CL2 certification means it passed safety tests administered by the Underwriters Laboratory (UL). The UL looks at heat generated from current flowing through wire, how quickly the cable will catch and spread fire when exposed to flame, and the wire's susceptibility to damage from external stresses. Also, be sure to check your local building and fire codes, and buy wire accordingly.
Different people will have their own opinions about what gauge is proper for what length. The quality of the equipment can also play a factor. The following is a general guide for picking gauges for certain lengths.
Based on the following questions, use the table as reference to select the proper gauge size:
Move down the column to select the wire AWG size that meets your distance requirement in feet.
|Wire AWG Size||4Ω Speaker||8Ω Speaker||70-Volt Speaker|
|Power Loss (%) / Attenuation (dB)|
Attenuation = -10lg (Pout/Pin)
Attenuation 3dB is commensurate with a 50% power loss.
The maximum distance for 12 AWG in a 4 Ohm speaker system with 11% or 0.5dB loss is 140ft.
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