$500 for running 5.1, and after the fact it looks too small or "is thin"?
What exactly is the wording of your contract. Are you saying he did something not to what was written and agreed upon or?
The advice given here is usually based on the scientific method, in this case your wire most likely is undersized.
In this post did you state your speaker/amp specs? Not clear if I recall right, that makes big difference.
5.1 at low power will be 5.1 sound...
(how/where did he run the LFE cable ?)
I had my custom loghome built for us 10 years ago and went thru and specified every spec in exact fine detail before signing the builders contract.
Then I had my own lawyer look over the contract to make sure liabilities were clear.
Hopefully you did same, if so either you missed it and need to decide to pay for spec change or the contractor missed it and needs to fix it for free to your spec.
Fwiw, I went with 14ga 4 conductor, bought a 500 ft spool.
Twisted together 2 14ga is approx 11ga.
Yes, slight overkill
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