Hi Troels,
I finished my Illuminator Center a month and a half ago, please find attached the pictures of its building.
Central side a bit complicated when we do not have access to a proper cutting table as it is my case. But having the previous experience of the building of Illuminator 7751, I managed to solve it on my own. 
Just to say that its sound is wonderful and quite big audio scene compared to the usual center channel speakers we can find in the market.
Thanks once again for your support and contributions to our passion.
I will resume the building process for the 2 Illuminator 71 which I plan to use as surround channels. Looking forward to taste the Illuminator tweeters they include in the set.
Kind regards
Antonio