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.
Simple rule, the thicker the better, the purer the copper the better. 12/10 gauge & thicker will easily handle up to 1000 watts rms amps with no problems.
Any MULTI strand 99.5% pure copper (NOT clad) wire will work. The thicker the better. 12 gauge and thicker will easily handle up to 1000 watts/channel rms with no problems.
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