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


It goes back to cable manufaturars, mostly provide no relevant data! to sales and the users. None will answer this!
Whay do you think that you own now the optimal cable to your setup?
I think I've figured it out. 


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" Can this site (forum) hold pictures? I can attach some."
That would be great, 100% WAF for sure!
Pictures:
A 4 AWG connected to a B&W802D:
https://imgur.com/a/42eh3h1
The other end is connected to a 250W PASS LAB power Amp.made for a friend in Israel:
https://imgur.com/a/LF0vyGZ
A set of 0 AWG cables before shipping to my friend in Canada:
https://imgur.com/a/gkuHdcD
An other view of 1 set: 0 AWG 2.5m long, to connect between a 250W EMPTICA power Amp.
and a pair of Vienna acoustics Beethoven speakers:
https://imgur.com/a/qwcIbTn
For both cables, the outcome was noticable.
This is the comment of the 0 AWG cables replacing a 12’ 14 AWG set:

"My initial impressions: It’s like having new speakers. The sound is pure and clean. Minute details are suddenly apparent. The range is amazing. Highs, mid-tones and a new bass that I didn’t know my speakers were capable of.

It feels that for all these years my speakers were being choked, and now can suddenly breathe and have their full voice.

To say I’m happy about my new Lang speaker cables is an understatement. I’m thrilled. Thank you for building these superbly engineered cables to unleash the full potential of my home sound system".


For posting pictures to this site / forum:

Use his site to upload: https://imgur.com/a/42eh3h1

Add a new post. Copy the URL address (https://imgur.com/a/gkuHdcD) and paste it here. It works!

Regarding Mr. Dill’s Q: " What about a double run of 0 AWG wire?
Should be twice as good ...."

The low cable resistance has an optimum value. After that, getting more gauge, would have little or no benefit (sonic) but will cost way more, as more material and labor are involved.

This optimum value need to be calculated. The result, should be rounded up to the next AWG avaliable on the guage table:
https://www.powerstream.com/Wire_Size.htm
Ref. to this table, a 4 AWG cable has a 0.81508 Ohm per 1,000m or
0.00081508 Ohm per 1m to have this as twice as good: 0.406392 Ohm,
requires a 1 AWG cable.
In other words, if you would need a 1m of 4 AWG, by doubling the length to 2m, it would now require a 1 AWG cable. or two 4 AWG in parallel. Two equal resistors in parallel = R/2 (of half the value of one resistor).
If in series, it is 2R (by ohm’s law).