Pick 50ft long speaker cable wires, with options of 12, 14, 16 or 18 gauge thickness. Hook up any size amplifier, speaker or subwoofer. Choose 50 foot speaker wires with 2 or 4 conductor speaker cable hookups. With 50foot 4 wire cables, you can twine them and lower the AWG by three. Also, pick an in wall 50 feet speaker wire for any inwall installation - these are CL2 rated, fire resistant.