Use 4 gauge instead. The results will be significantly better than 8 gauge. The gauge refers to the diameter of the twisted , braided cable. Each cable to each terminal(not a combination of the separate cables) and has nothing to do with the covering. In other words you will run one separate 4 gauge cable to each speaker terminal for best results.
"Auto grade" does not mean lesser quality. Often what is commonly referred to as "auto grade" is far superior to what is ordinarily available to audiophiles. Connects and power cables in automobiles have to be of high quality to sustain the abuse of their enviornment.
I use 4 gauge braided pure copper cable (1672 99.99% pure oxygen free wires per cable (it's called "DC power cable") available from www.partsexpress.com. This is far superior to any brand of speaker cable i have found on the market.
It is commonly used as power cable from the car battery to the amp, but don't let that deter you. It is exceptionally good as speaker cable and the cost per foot is in the price range you mention in your post.
"Auto grade" does not mean lesser quality. Often what is commonly referred to as "auto grade" is far superior to what is ordinarily available to audiophiles. Connects and power cables in automobiles have to be of high quality to sustain the abuse of their enviornment.
I use 4 gauge braided pure copper cable (1672 99.99% pure oxygen free wires per cable (it's called "DC power cable") available from www.partsexpress.com. This is far superior to any brand of speaker cable i have found on the market.
It is commonly used as power cable from the car battery to the amp, but don't let that deter you. It is exceptionally good as speaker cable and the cost per foot is in the price range you mention in your post.