looking for flat speaker cable to go under carpet


I need a long flat speaker cable ( 7meters) to go under my living room carpet. My current cable is too bright.Can anyone recommend a reasonably -priced  neutral cable that would suit? Most Nordost products are flat but too expensive for my budget.Would like to do this for under $600.
rrm
Goertz Alphacore Veracity

https://www.thecableco.com/mi-2-veracity.html

7M terminated prices out at $684 slightly above your budget for a very nice cable.
Alpha Core is now a subsidiary of Bridgeport Magnetics.  I have a pair of the mi-2 that I will sell very reasonably.  They are certainly not mint, but 100% functional.  You know that for certain amps Alpha Core recommends the use of a zobel network, which I have and would include.
I drove an amp into oscillation because I didn't know about the zobel network when I tried the Goertz.
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