New power cord needed for speaker with powered subwoofer?

What is the AWG of your cable?. 

No specs for the cable from Morrow for MAP4 power cable.  Another power cable that has some specs https://benchmarkmedia.com/products/locking-power-cord. 

@jbrrp1 Is it possible to boil it down to materials, gauge and manufacturing technique / innovations?.  The price for cables is all over the place. Just wondering if you can help. Thanks

@prof @djones51 But how does one reason about it, like maximum current drawn, material, gauge, length and contacts etc of the cable.  

There is some evidence of a good cable (mostly better AWG, for speaker and length etc) to make a difference(may be worth it or not is a personal matter) : https://www.lifewire.com/speaker-cables-make-a-difference-3134902

Something about power cables: https://www.audioholics.com/audio-video-cables/power-cables, written with help of blue jeans so not sure if it is completely impartial. 

I seem to think that good construction(preventing hazards) , proper gauge for the application, length, material and rating are to be considered. I have seem some manufactures do not even mention the gauge and list for a lot of $.  I would stay away from them.

Once we have those objective factors it will be easy to see what one gets for the $.

@rvpiano Have you tried a statically sound testing procedure?.  You have to have someone not tell you which cable is used and play the same track/track section over an over again in the same room at same SPL level and collect data. And if you could discern the difference and stay at or above 3 standard deviation from a coin toss (the mean) that would be something. A large sample is important to get good result.


 

@rvpiano lol!, our biases are quite strong, run a test like @prof is suggesting. You may be surprised at the result. Remember to run the experiment few times.