Floor Speaker Sockets for Surround Speakers in a 5.1.4 HT setup

Thank you all for your responses. Sorry for my slow response. 

In the end I went with conduit under the concrete floor, surface out of the carpet via one of these: "BG Screwless Brushed Steel Single 1 Gang Brush Cable Entry Wall Plate."

This will sit directly under some atacama stands so cannot be seen. The speaker cable is fed up inside the speaker stands.

For cabling, I used SCP 16/4 speaker cable OFC DCA rated orange jacket.

That is true, my HT processor has Audyssey that handles the delay by setting the distance so the sound arrives the same time as my other speakers. If you don't use Audyssey or Dirac wires might be better.

@kota1 

I wonder , going wireless with a Home Theater system ….

There is a ´´delay ´´ parameter  that is quite important.

I think ´´Wireless ´´ adds a delay of its own .

Listen to your electrician OR go wireless:

https://www.amazon.com/DYNASTY-PROAUDIO-Amplifier-Selectable-Switching/dp/B08J8CJJTR/ref=sr_1_3?crid=1KNT48GG65O5C&keywords=wireless+surround+amp&qid=1675736752&sprefix=wireless+amp+for+surrounds%2Caps%2C179&sr=8-3&ufe=app_do%3Aamzn1.fos.f5122f16-c3e8-4386-bf32-63e904010ad0

Sure.  I mean personally I'd just run flat speaker wire.  It's pretty cheap from the right sources like Parts Express.  That's also a good place for finding DIY hardware like this.

What will happen when you will wash the floor ?

What about  basement flood ?
I would rather have theme on the wall.

I would use 10 or 12 guage .