If a speaker cable added 1 - 2 ohms of resistance would that be?

It would not be worthy of worry. Better to insert a small resistor and see if you like it.

WHY??

@deludedaudiophile
I’m not sure what parallel universe you reside in but I just measured some: 

9 feet of Audio Arts SC-5 14 gauge - .2

8 feet of Blue Jeans Cable (Belden) - .6

15 feet of RCA zip - .3 

On a Fluke 77
I’m with Alfred E. Neuman on this one. Why don’t you cipher how many eggs make a dozen? Studying impedance curves will make you cross eyed.