To carry an amplified signal, speaker wire needs adequate thickness. Because cable thickness is measured in gauge, the gauge size of the wire is important to take into consideration. The American Wire Gauge (AWG) uses lower numbers to indicate thicker wire and higher numbers to indicate thinner wire, so be sure to check the AWG size when choosing your wire.

Speaker wire can be used in low voltage applications, such as radios, public address systems and music systems.

Most often, speaker wire is the electrical link between loudspeakers and amplifiers. The construction of speaker wire consists of two insulated electrical conductors. Allied Wire and Cable’s speaker wires consist of one bare and one tinned copper conductor in a clear PVC jacket.