Hi Troels   I've just finished a pair of speakers based on your design. The boxes are a bit bigger, just because that's what I had handy. The Fostex have been modded after the fashion of Planet10 which worked very well on the last pair I made. Apart from lack of bass, nothing much below 100Hz, they sound very smooth and detailed, the Fountek certainly helps to take the raw edge of the Fostex, and will no doubt improve once they are run-in. One thing I learned is that French polishing ain't easy! Pic shows quick set-up just to see how they worked using 3.5W of Get-SET-Go amp. Many thanks for your design.
All the best