3 Foot Speaker cable from Divine Noise. This is the best cable you can possibly use on your head & cab setup. Made from gigantic 10AWG wire.

From Divine Noise

The output of your amp is opposite of the guitar’s signal; low impedance high power. Our high-end speaker cable is made to carry a relatively high AC current and voltage from the output of your amp to the speakers. Optimal signal flow is achieved by using large diameter cable from the amp to the speakers, that’s why thin gauge speaker wire is for suckers!

• Made from 10 AWG (oversized straight connectors) and 12 AWG (oversized right angle connectors) stranded Oxygen Free Copper which offers very low capacitance and inductance for a pure clean warm sound
• The twisted-pair wire construction eliminates hum
  
• The only cable manufacturer to offer oversized right angle ends on 12 AWG wire offering a lower profile on the backs of amp heads and cabinets (12 AWG wire only)
  
• Every cable is soldered by hand using the highest quality silver solder
• G&H Plugs
• Completely made by hand in the USA.
• Divine Noise offers a lifetime no hassle warranty on every cable