Mine, wall mounted and extended to about 1" from the back of the speakers, which are 17.5" from the wall.
The speakers only intrude upon the screen view from more than 45º off-axis, by which point the speaker also don't sound nearly as good. There are actually no comfortable seats that far off-axis anyhow.
KEF R500, R200C, R100, R50, SVS SB2000 sub, NAD T758v3 AVR, LG UP875 4K BlueRay, Samsung UN55JU6500F 4K LED TV, KEF M500 headphones, Sony CDP-CE500 CD changer. Office: NAD M10, KEF LS50, KEF Kube 10b, Pro-Ject RPM1 TT w/ Ortofon 2M Red. Guest room: Hafler 300 L-R, KEF Reference Model 100 center, KEF iQ10 surrounds, modded M&K V-90 sub, Bluesound Vault 2.