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

Mr. khiak

The connectors you call BNC are not BNC!
GOLDMUND TELOS 600 : http://www.audiounion.jp/ct/detail/used/95826/
Or the last page of your GOLDMUND TELOS 600 RTFM.
BNC: https://www.iitk.ac.in/ibc/BNC.pdf
It looks more like an enlarge (not STD size, but very large) TNC.
GOLDMUND would be a good place to start with. I don't like this "unique" approach. However, the TELOS 600 have also 4 ordinary binding posts.
I am kind of confused...how did you connect the GOLDMUND TELOS 600 with your speakers till now?

For all those who are in the process of getting a NEW cable that was calculated and recommended.

First, good luck and thanks for the trust. I really hope that most of you, if not all, will end up happy and satisfied.

 

When the time will come, to share your impression here, please do it in some ordinary way:

>  Specify your Amp and speakers.

>  Specify the previous cable that was replaced: just gauge and length.

    Please avoid brand and model. Thanks. 

    You may add how much that cable cost…

>  Specify your new cable: gauge and length. If other than was

    recommended, please notice what was recommended too.

 

Then use your own words to describe your impression.

This is important for all of us, to get the equipment and cables data, not only a say of how good (or not) is the new cable.

Thank you all in advance.

Michael (b4icu).

Mr. khiak

As I already established a communication line with Goldmund and Mr. Rodolphe, I posted him some questions regarding the Telos 600 special speaker connectors.

I'll share that with you as soon as he will reply.

We never leave a wounded on the battlefield ! :-)

b4icu,
thank you so much Michael. If the 4 or 6 awg can be somehow attached to this coaxial connection of the amp, it will be wonderful. 

Dear b4icu,

I purchased 25 feet of 0 AWG form a supplier on eBay for $45 ($12 shipping) and four brass (supposedly gold plated) battery connectors ($7.49).

I constructed four five foot cables in just over one hour.  Battery connectors were converted to spades with a cold chisel and wire cutters, cable was cut with a hacksaw and insulation stripped with the hacksaw.  Spades were connected to Pass Labs 250.5 terminals (PL does not supply banana plug receptacles).  I attached banana plugs to a two inch piece of silver plated 8 AWG wire.  I hollowed out a holle in 0 AWG wire with a punch and did not remove insulation.  I then inserted the stripped 8 AWG wire in hole and secured the assembly with a hose clamp around the insulation at the cable’s end.

The cables were attached to my thirty year old modified MG IIIa’s.  The results are stunning.  The amount of undistorted energy filling the room, is jaw dropping.  I keep turning up the volume to levels that previously irritated my ears, and experience no irritation.  In the modified lyrics of B.B. King, “The shrill is gone.”  My wife is hearing new detail in cuts she has listened to many times before.

In my case, b4icu, you were absolutely correct, thank you (except for the part of you doubting ribbon speakers would be improved with installation of your design).  I can’t wait to try the cables in one of my other systems that employs cone speakers.

I am am sure every case is different.  Nevertheless, I encourage other hobbiest to test your theories.

Thank you for your generosity and patience.

All good wishes