C-sub Analogue subwoofer cable Prices from £35.00 (UK RRP) The Chord Company C-sub is designed to work with all home theatre amplifiers and active subwoofers. Multi-strand, tinned copper signal conductor, with low resistance to enable longer lengths. Multi-strand lapped screen for increased flexibility, which reduces signal loss caused by high frequency interference. Unique gold plating process on the RCA plug improves signal transfer across audio frequencies. The over moulded plug surround provides a high reliability connection. Available in 3m, 6m, 8m and 10m lengths.