100% copper oxygen free CL3 in-wall speaker cable. Speaker wires for in-wall or in-ceiling installation and for outdoor use are available at Outdoor Speaker Depot, which carries the In Wall Speaker Wire and Cat5 Cable CL3 Rated. Read more...
The 16 Gauge 2-Conductor Oxygen Free Burial Rated In Wall Speaker Cable 50-foot CL3 is used for outdoor speakers and low-voltage lighting and has a polyethylene jacket that is U/V resistant and protects against water damage. Speaker cables that are 100 feet, 250 feet, 500 feet and even 1,000 feet are also available. For installations that require 4-conductor, 14 gauge cables, Outdoor Speaker Depot has the 14 Gauge 4-conductor Oxygen Free Burial Rated In Wall Speaker Cable 500-foot CL3 for large, direct burial outdoor applications which call for long speaker runs and a voltage rating of 300V rams. This cable is rated for both commercial and residential use.
16 gauge speaker cable can be used for distance up to 100ft, 14 gauge speaker wire is good for over 100ft, 12 gauge speaker wire is good for distance longer than 200ft application.
In most applications, use 2-conductor speaker wire, use 4-conductor speaker cable to connect single stereo speaker or to the outdoor volume control (from your receiver)