Use two-conductor outdoor speaker cable for a standard speaker connection that carries one audio signal to each speaker. Choose four-conductor cable when a run needs to carry connections for multiple speakers, support a more complex landscape audio layout, or reduce the number of cables routed through an installation.

Outdoor speaker cables for 70V systems commonly use eighteen-gauge, two- or four-conductor configurations, while cables for 8-ohm systems are available in heavier twelve-, fourteen-, or sixteen-gauge options. The heavier gauge can support longer runs and higher power demands in 8-ohm installations, so select the cable based on the system design, run length, and speaker requirements.

Look for a direct-burial cable with a moisture-resistant thermoplastic PVC sheath, oxygen-free copper conductors, and a gauge suited to the run length and system power. Installer-friendly features such as sequential distance markings, anti-snag dispensing, and easy-to-strip jackets can help simplify installation, while two- or four-conductor configurations support different outdoor speaker layouts.

Map the speaker and subwoofer locations first, then plan cable paths, amplifier connections, and a little extra length at each endpoint for termination and service. Use direct-burial outdoor speaker cable, choosing two- or four-conductor cable and an appropriate gauge based on the system design, run length, speaker impedance, and power requirements.