"12 ga. is 12 ga" ??
1. the physical distance between the positive and negative legs will determine the capactive and inductive characterics of the cable.
2. the number of strands will affect high frequency response and group delay.
3. the material used in the dielectric will affect apparent speed of the presentation, and will affect ultasonic high frequency extension. That's why manufacturers of quality audio cable use PE, foamed PE, or teflon instead of (much cheaper)PVC.
And those are just easy-to-talk-about factors ...
1. the physical distance between the positive and negative legs will determine the capactive and inductive characterics of the cable.
2. the number of strands will affect high frequency response and group delay.
3. the material used in the dielectric will affect apparent speed of the presentation, and will affect ultasonic high frequency extension. That's why manufacturers of quality audio cable use PE, foamed PE, or teflon instead of (much cheaper)PVC.
And those are just easy-to-talk-about factors ...