Two-conductor 12 AWG speaker wire typically carries one speaker signal, making it suitable for standard single-speaker runs in a distributed audio installation. Four-conductor 12 AWG speaker wire can carry two speaker signals in one cable, which may simplify wiring for stereo sound at one location or for multiple speakers in the same area.

Installers should choose plenum-rated 12-awg speaker wire when the cable will run through plenum spaces, such as air-handling areas, where the installation requires a plenum-rated jacket. Choose direct-burial 12-awg speaker wire for outdoor or underground runs, using the product’s listed ratings and local codes to guide the installation.

Choose a jacket rating that matches the space: CMG-rated 12-awg speaker wire for many indoor routes, direct-burial wire for underground outdoor runs, and plenum-rated wire for air-handling spaces above ceilings. Also consider the number of conductors, cable path, pulling access, moisture exposure, and local low-voltage requirements before installation.

Compare two-conductor and four-conductor configurations, along with high-strand-count oxygen-free or bare copper conductors, to match the speaker layout and installation needs. Compare CMG, direct-burial, and plenum-rated jackets based on the intended environment, and consider easy-to-strip or lower-friction jackets for smoother installation.