No one actually knows how to lculate what speaker cable they need

@b4icu As mentioned before, the cables were made by Kharma. (grand reference speaker cable). Did not buy new, but at an auction. This is a silver/gold alloy cable, with an anti-vibration tube around it. Does it matter? I don’t know, all I know is that I’m happy with what I’m hearing. Price?? This is an old cable, which many years ago would cost US $ 20k or more, I paid about 1/10th of that amount for a 3 meter set. The diameter of the conductor going into one spade (factory terminated, and bigger spades than usual) is about 8mm. So I’m using two of that. Why? because it’s there anyway. Bought the cables years ago for another speaker set-up. By the way, in principle I don’t buy many new cables. Prices of second hand cables drop quite a bit, prices of cables at auctions are even much lower yet. Used to use Siltech cables in the past, did like those as well. Again, never bought new cables.

Mr.  glupson
Thanks. If only we could keep talking on the subject.
Now most of the posts are none relevant.

Mr.  geoffkait
How low can you go?
Little errors lead to big errors - No more error talking to you!

Mr. han_n
I'd call CH Swiss to check about your M1 Amp.:
" Dear Michael,

Thank you for your interest in our products.

The damping factor of an amplifier being the ratio between the connected loudspeaker's impedance and the amplifier's output impedance, we can not publish a single number.

We would need to publish a damping factor for each possible load (like any amplifier manufacturer should), but also for every setting of global versus local feedback ratio of our amplifier (which is user-adjustable on the fly from fully global to fully local, with 9 evenly-spaced steps in between), as this setting has a direct effect on the M1's output impedance.

At full global feedback, the M1's output impedance is measured at 0.013 Ohm. So in a 8 Ohm loudspeaker, this means a damping factor of 615.

At full local feedback (no global feedback at all), the M1's output impedance is 0.09 Ohm. So in a 8 Ohm loudspeaker, this means a damping factor of about 90.

As a loudspeaker cable of a few meters probably has an impedance of more than 10 mOhm, it might actually have a dominant effect compared to the amplifier's output load, at full global feedback.

I hope this answers your question.

Best regards,

Loris Stehlé"

If we go for the best I would say that the M1 \'s DF is >500.

But when I looked into your speakers: Gryphon Pendragon 

http://www.gryphon-audio.dk/media/1408/manual-pendragonv2.pdf

I found that the bass unit is self amplified by a 1,000W amp. It is connected to your Pre. by XLR and no speaker cable is required.

The Mid/High unit is a ribbon. So a regular wire (12 AWG would do). Even thou your system is very expensive, you can save big on the cables. :-)

The Bi wire - Bi amp on the Gryphon Pendragon  Mid/High unit won't give you any improvement. only cost way more, if you think of another pair of CH M1's ($37,000.- each).

I assume, that my word wouldn't count till now, from your lovely response.

However, maybe this answer from a Swiss respected firm's engineer (CH), would:

"As a loudspeaker cable of a few meters probably has an impedance of more than 10 mOhm, it might actually have a dominant effect compared to the amplifier's output load, at full global feedback".

Even thou in the case of the Gryphon Pendragon , none would apply. But Mr. Loris Stehlé couldn't know that.

I'm amazed that CH official answer didn't involved any of the most preposterous  claims, of that cable's directionality, the skin effect, the burn in or some of the even none relevant of your posts.

Why is it so difficult for you to accept this?