Do power cables mAke difference on powered woofer

I am running Gutwire B-16s on my RELs and think it makes a difference. Haven't done double blind tests as they are hard for one person to set up.

i did an A/B with my velodyn dd12 using a PS Audio AC-10 against stock. purchased AC-10's and AC-5's for almost all of my gear so i decided to try one on the sub. was very happy with the results on my other components so i assumed the same would hold true for the sub.

one thing that should be noted is that my sub's volume/output is set to 15 on a scale of 100. i only use it as a "slight enhancer" for way down low.

i noticed no difference at all so i decided against the expense. maybe if my sub was being used/pushed more, the results would have been different?. plus my system is not that high end or revealing. a better system might have shown more of an improvement?.

btw...i do have a dedicated lines and porter ports so my AC supply is decent to begin with

just my experience.

It may be of note that Professor Hsu does not recommend an expensive power cord for any of his subs. He doesn't believe they make a difference. His company makes great subs.

Gauge makes a difference on my Art of Sound sub. Nothing less than 12ga and copper work best. Silver plating seems to take away a bit of impact. However, realize that I am using mine for HT only.

On my powered subwoofer an upgraded power cord definitely made a positive difference.