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

Your speaker’s output would deviate and track the impedance of the speaker instead of the original frequency response. It would be a lot like using a tube amp.

While you can experiment with this, please keep the wattage of any resistors in mind. I’d stick to 10W or higher for low - mid level experimentation.

I also want to point out that speakers with high resistance also heat up.  Attempting to use undersized speaker cable, like 18 gauge or thinner, with large amps can be a fire hazard.

@fuzztone 

Why?  Because there is a cable that seems to get a heavy amount of interest here, currently a thread running on it, and guess what, depending on length, it has about 1-2 ohms of resistance. That's missing from the marketing blurbs, and of course it is not in any online review.

Lots of positive reviews (not all), and of course it will be a very audibly different cable from any other cable. This is one case where there is no question, the difference will be audible. However, if you paid big bugs for a speaker with a great frequency response, or big buck for an amplifier with a low impedance output, then using this cable will negate both of those things.

Taking a quick look at some impedance curves on Stereophile, I would say most speakers have a rising impedance in the midrange (1-3K), a dip in mid-bass(80-300Hz), and then a big rise at low frequency. What happens at upper frequencies are all over the map. Just looking at a few Magico, one rises to 6 ohms then up to 8. One stays near 4. One Tannoy rises up to 16-20 ohms.

If my interpretation is right, midrange would appear louder in most cases, mid-bass a bit subdued, maybe a bit more deep bass, and highs you are rolling the dice. If you have a low impedance speaker, my math says up to 2+ db changes in the frequency response.

To me it looks like an expensive resistor.

@deludedaudiophile  - As you increase the amplifier's effective output impedance the effective frequency response of the speaker would track the impedance curve. 

@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.

Do you have any Silversmith Fidelium? 6 feet is 1.1 ohm total. 10 feet, 1.8 ohms.

I don't live in the parallel universe where someone thought that was a good idea ... but someone did.