Monoprice Inc. 2818 speaker wire 12AWG 2-conductor 500ft

12AWG oxygen-free copper speaker wire

This 12AWG speaker wire uses 99.95 percent pure oxygen-free bare copper conductors for lower resistance than copper-clad alternatives. It suits installers and audio enthusiasts running long in-wall or whole-home speaker cables. The CL2-rated white jacket meets residential in-wall safety requirements. Supplied as a continuous 500-foot spool for flexible cut-to-length installation.

CL2 rating limits in-wall use to residential spaces

The CL2-rated jacket is approved for installation inside walls of residential-class buildings only. It does not satisfy plenum or riser fire codes required in commercial structures. The two-conductor design carries a single stereo pair or one mono channel per run. Oxygen-free copper reduces added resistance that can alter speaker impedance over distance.

Check local code and run length before ordering

Verify that your project only requires residential CL2 compliance and not a higher fire rating. Measure each cable run to confirm the 500-foot spool provides enough length for all speakers. Ensure your terminals accept 12AWG bare wire without adapters. Confirm you need a two-conductor layout rather than four-conductor for bi-wire or multi-zone setups.