Monoprice 12AWG 4-Conductor Speaker Wire (CL3 Rated) — 250 ft, White

Overview: Monoprice 12AWG speaker cable, 4-conductor design, 250 ft spool in white. Built with pure bare copper conductors and individually color-coded PVC jackets for quick polarity identification during installation. Conductor performance: This cable uses pure bare copper, which provides noticeably better conductivity than copper-clad aluminum (CCA). CCA conducts at only about 68% of the efficiency of pure bare copper; that extra resistance increases speaker impedance and can negatively impact sound. Choosing pure bare copper helps keep the amplifier’s load closer to the speaker’s intended impedance curve. Safety and in-wall use: The cable carries a CL3 in-wall rating, meaning it complies with relevant fire-safety and insurance requirements and is approved for use inside walls of residential-class buildings. A CL3-rated cable can handle up to 300 watts of surge capacity — double the 150 watts supported by a CL2-rated cable. Specifications: 12AWG, 4-conductor, 250 ft, white jacket; each conductor is color-coded PVC for easy polarity recognition.