What Wire Should I use for 70 volt Audio?

Quick Tips for Commercial Speaker Wiring: A Simple Guide

Generally, speaker wire is determined by the length of the run and the wattage utilized:

  • Wire runs less than 50 feet and utilizing 50 Watts of power or less use 16 gauge wire.
  • Wire runs more than 50 feet and/or over 50 Watts of power use 14 gauge wire.

When selecting your wire and line loss for length of speaker run, other specifications to consider are: UL Listing, Plenum Rating, weatherproofing, etc.

Speco Technologies has provided this information as an educational introduction to commercial sound systems.

Speco Technologies assumes no liability for any information within this guide section and/or any action that is taken based on the information contained here. Please consult licensed professionals when performing commercial sound installations.


Initial Publish Date: October 29th, 2024

Article Authored by: Phil Benanti