Overkill for small room

Wow, this a wellspring of helpful info.

One question about damping: is this a function of the amp or the speaker?

If I understand 'good' damping correctly, it involves quickly stopping the woofer's motion when no bass signal is present. Do I have that correct? This would be especially important with larger diameter woofs and subs, no?

@letshearit no worries, thanks for the clarification!

I think they are fantastic speakers. You are right that they would be a better fit for a bigger room. I have the Evoke 20s for a room similar size with 1 sub, and they are awesome. The moment I can afford a pair of used Contours, I will buy them! I heard them many times at a local dealer and I love them.  

Here is a good explanation of damping factor

https://us.kef.com/blogs/news/damping-factor-explained#:~:text=Damping%20factor%20is%20a%20specification,quick%20tutorial%20is%20in%20order.

It is a combination of the amp and speaker and it applies regardless of woofer size. I believe you have the correct general understanding.  I’m no expert on it though. Others here might have better insight.  

Those speakers will be fine in your room. But you will need a beefy amplifier to drive these. They are rated as 86dB and 4 ohms, Ouch!. An amp tat can deliver high currents should drive these comfortably.