Goertz flat speaker cable?

this?
alpha-mi_2_veracity__pair_.jpg

i wouldnt use it anywhere. really high capacitance. a few meters of thoes can break some amplifiers.
 
For big woofers, I use 14 AWG THHN wire. For small woofers I use 16 or 18 gage fine strand wire (parts express speaker wire). For tweeters I use 18 or 20 gage fine strand wire.

Years ago I wanted to hear a difference in speaker cables... I tried, but I just could never hear anything different between ordinary wire and the special cable I borrowed from friends.