Speaker Wires - Wire - The Home Depot This 250 ft. 14/2 Speaker Wire features a This 250 ft. 14/2 Speaker Wire features a clear-stranded design for easy organization. For use with speaker systems in an indoor audio system. The spool packaging enables convenient distribution. More + Product Details Close Home Audio Installation: Install A Whole House Audio The whole-house audio system we’re showing in this article uses a technology called A-BUS. A-BUS technology uses a standard Cat-5e cable (four-pair communication wire) to carry all the signals from a central source. The wires carry audio signals to each room, where they’re amplified to speaker-level audio by the keypads.