Hi,
Yes they were fairly easy to construct the supplied instructions were good. As for fine tuning I’m still running them as supplied with no mods and they sound really good to me. The only thing I can’t decide on is the design of the grills! I think I’m on my third different incarnation now! Over the years I have owned quite a few different speakers..
B&w P5
B&W CDM1
B&W CM1 with CM2 subs (still have these)
Monitor audio S8 (still have these)
Various missions
But I must say the IPL’s are by far the best in every respect, the only issue is the size of them there not for the faint hearted!