Reliability of Dutch & Dutch 8C speakers

Can anyone give some insight on this?

http://www.6moons.com/audioreviews2/dutchdutch/1.html
http://6moons.com/audioreviews2/dutchdutch/9.jpg

I’m not too concerned what parts are used as long as they sound good and are reliable. They do sound good. I have had a failed amplifier unit though. 

Should have mentioned: the speaker was repaired promptly under warranty. 

Ah, I see in the review images the fan. Thank you.

So, how often does that fan turn on, and what is the noise level. I likely would not even consider a speaker with a fan. My room is so quiet that I likely would hear it. I do not accept any fan in any component. I'm not interested in introducing potential noise generating equipment.