First off, I'm fairly tech savvy all around, but definitely lacking when it comes to audio. I bought a new house that has a fairly robust Sonos system (detailed below). Due to the lack of dialogue support from the multichannel surround speakers, I'm looking to add a center channel. I understand why you wouldn't add a soundbar to a surround sound system, but I don't know if the same holds true for Sonos and the Arc. Basically, can I get the Arc or do I need to get a dedicated center speaker?

Marantz SR6014 receiver

Sonos Connect for poolside Sonance 8 speaker system, no sub, Sonance multichannel amp

Sonos Connect for courtyard 2 speaker system (not Sonos speakers), Sonance multichannel amp

Sonos Connect for 6 in-ceiling Sonance surround speakers in living room

Sonos Connect for 2 in-ceiling Sonance surround speakers in kitchen (directly behind living room)

Play 5 (speaker we move from room to room when wanted for music

Sub (not Sonos and can't remember if 10 or 12 inch)

When I moved in, I had to clean out the media cabinet of old equipment (broken universal remotes) and hard reset the Connects to connect new wifi. I finally got the full system working (was having an issue with the kitchen speakers not playing). The receiver is set up to recognize the sub, 2 front speakers, 2 surround speakers, 2 rear speakers (kitchen speakers, Zone 2), and 2 front height speakers (that may not be the best setup and haven't tinkered with it since I got every speaker working).

The center channel would sit on the mantle below the TV (mounted on a stone fireplace). I'd like to get the Arc if it will work. The feedback I've gotten is that it won’t work because it is eARC.  The receiver supports eARC.  I’m not as worried about the voice control.   If an Arc isn't the way to go and I need to get a normal center speaker, I'd still run the speaker wire through the wall.

Thanks in advance for any help.