I had a good time listening to my D58-ES speakers but then I had to go back to work. I did not know what kind of enclosure I would use for the FE168EΣ. I thought I would do bass relflex speakers as they are easier to build and don't take a lot of room. Anyway my girlfriend wanted me to make the D-37 enclosure, which is the little sister of the D58-ES. This is really a great idea, I don't know why I wanted to do something else.
I found the plans on Mr Masao Ida's website again : http://homepage3.nifty.com/spida/pag9-01-16.htm
Again, I had to convert the plans, which are designed for 15mm thick wood to use 16mm thick MDF. Here is the detail of the peaces if you want to use 16mm thick MDF.