Do speaker cables really make a difference ?

I just upgraded my speaker and interconnect cables to the Neotech Sahara rectangular OCC from harmonic Tech round OCC what a difference as good as around OCC is the rectangular OCC is even better, not cheap but well worth it.

if you can hear the difference, they do

OK assuing all the wires attached to the components are top shelf(and likely costly)and the synergy is perfect. What happens to the sound(signals) when the signals  meet the cheap zip cord like internal speaker wires?  It can't be good can it, How can it be good?

What happens to the sound(signals) when the signals  meet the cheap zip cord like internal speaker wires?

1 - the internal wiring of speakers is not as important, because (a) they are very, very short runs, way shorter than the speaker cables, and (b) they are inside the cabinets (not subjected to other environmental factors associates with the speaker wire going from the amp to the speakers).

2 - Good speakers use good internal wire, and not crap / zip cords.

Hopefully I did not waste my time writing this, as I smell a snarky question, like you folks always do. Oh well...

Once you try Fidelium in your rig you'll have your answer.