500 Ft Foot Solid Copper Stranded Speaker Wire 2 Conductor Loudspeaker Cable CL2

500 Foot 2 Conductor Loudspeaker Cable 99.95% Pure Solid Copper Stranded Speaker Wire CL2 Rated Model M-403846

Get the most out of your home audio system with high quality two conductor, oxygen-free, pure bare copper speaker wire.   This cable is rated CL2 so it is safe to run inside your walls.

This speaker wire features two conductors made of high purity (greater than 99.95% pure), oxygen-free bare copper. Pure Bare Copper is a superior conductor to the copper clad aluminum (CCA) conductors used in most other inexpensive speaker wire. CCA is only about 68% as conductive as pure bare copper. This additional resistance is added to the impedance of your speakers and can negatively effect the sound.

Specifications:

  • Roll Length:  500 Feet
  • Oxygen-Free 99.95% Pure Copper
  • Conductor:  Stranded Solid Copper
  • Color coded PVC jacket
Recommended Maximum Run Lengths for Solid Copper Stranded Speaker Wire
Wire Size
2 Ohm Load
4 Ohm Load
6 Ohm Load
8 Ohm Load
18 AWG
8 Feet Max
16 Feet Max
24 Feet Max
32 Feet Max
16 AWG
12 Feet Max
24 Feet Max
36 Feet Max
48 Feet Max
14 AWG
20 Feet Max
40 Feet Max
60 Feet Max
80 Feet Max
12 AWG
30 Feet Max
60 Feet Max
90 Feet Max
120 Feet Max

 

For the wire to have no audible effect, the total wire resistance should be no more than 5% of the lowest impedance of your speakers. Even speakers rated for a nominal 8-ohms, may dip to as low as 4-ohms at some frequencies, which further reduces the total cable resistance allowed in the wire. Using Pure Bare Copper speaker wire ensures that the total load put on the amplifier remains as close as possible to the impedance curve of your speakers.

For example, a 16AWG 2-conductor Pure Bare Copper speaker wire has a total resistance of 0.803 ohms per 100 feet (both directions must be considered). By comparison, a 16AWG 2-conductor CCA speaker wire has a total resistance of 1.181 ohms per 100 feet. Assuming 4 ohms is the lowest impedance of your speakers, a speaker wire run can be no more 0.2-ohms total. 20 feet of 16AWG Pure Bare Copper would be 0.1606 ohms, well under the 0.2-ohm limit. On the other hand, 20 feet of 16AWG CCA would be 0.2362 ohms, well OVER the 0.2-ohm limit.

One side of the clear outer PVC jacket is marked with an easily visible blue stripe to indicate polarity.