The towers are Paradigm Studio 100s v3.
Link: http://www.audioreview.com/product/speakers/floorstanding-speakers/paradigm-reference/studio-100-v3.html

There is a center inside the mesh under the TV and it is a Paradigm Studio CC-590 v4.
Link: https://duratone.com.au/product/paradigm-studio-cc-590v4-center-channel-speaker/

The sub is a SVS: SB-2000
Link: https://www.svsound.com/products/sb-2000-black-ash-outlet-1194

And the rears (not in the photo) are: Paradigm Studio 20 v4
Link: https://www.soundandvision.com/content/paradigm-reference-studio-20-v4-speaker-system-glance-ratings

I've had all of the Paradigms for more than 10 years, got them used.

It sounds pretty good, they can definitely blow you away when watching movies. For music they are a little bright, I will EQ them down in the highs for some material.

I have no desire to upgrade the speakers, but every 3-4 years I end up with a new TV.