I will plead guilty to using a double run or shot gun style speaker cable set up ... I started with a single run of Ridge Street Audio Poiema !!!'s and then added a second set for all the reasons Al mentioned ... lower resistance lower inductance and lower impedance
These are high purity silver based flat ribbon cables in cotton with no shields ... I choose them because IMO flat ribbons offer greater band width .. better noise rejection and are relatively immune to skin effect
I started with a single run of the RSA P!!!'s and then added a second set ... the difference wasn't night and day ... more like dusk to dawn ... but all positive with no down side
The basic metrics of Bass - Mid Range and Treble along with dynamics and sound stage show little or no change ... but the overall presentation was more relaxed and natural sounding with more swing and sway (PRAT)
I could tell immediately that there was an improvement, but was hard put to put my finger on what improved
My WAG is the reduction in impedance allows for faster and easier signal flow and transfer ... thus the improvements in speed .. edge detail .. trailing/decaying transients and notes starting and stopping ... which make for a more relaxed natural presentation
I run my set up a little differently than the conventional way shot gun set ups are run ...rather than stacking one speaker wire set on top of the other set at the binding post ... I take each individual + and - pole of the individual speaker cable and tie them together at the amp and speaker termination this way each individual run is either positive or negative ... hopefully reducing the inductance of the + and - poles in a speaker cable that induce from the Positive run to the Return or Negative run when both are run inside the same sheathing
If you are looking to improve something in the basic metrics of your system that is lacking ... this won't help much ... I don't see it improving some characteristic problem in your system that is a problem ... it is more a enhancement of the general presentation sorta like waxing you car after washing it
The washing of your dirty car brings back all the glory of that custom paint job but the waxing just brings out or enhances the custom color
The washing is improved and enhanced by the waxing .
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