Whirlwind NL4-075 Multiline Series 4-Conductor Speakon to Speakon Cable (75 Foot)Whirlwind's Multiline speaker cables represent their latest efforts to provide the industry with the most reliable connectors and cables available today. Most cable manufacturers simply use the screw down terminals inside the connectors to terminate, but Whirlwind also solders the connections for extra stability. This enables them to give a lifetime warranty on these cables. The 4 conductor cables use 12 4 SJ type wire.