The original version of the Buschhorn Mk2 plan may be found here.
This is the picture of the original Dr.A Buschhorn's version for FE83.
This is the plan for my, slightly modified, version. Please click to the image to see the full size plan or download PDF version.
By the way, they sound great!
Now drivers are waiting for some coats of dammar and cabinets are waiting for oak veneer.
There is Mk2 frequency response in my real environment (take a look at previous image). For measurement I use RS sound level meter and home made test CD with test tones (thanks to Eric Vallin).
For veneering I use nice Ralph Calabria instruction on his site. Thanks Ralph.
Finally, with original Fostex FE103...
Notch filter.
July, 2002.