Presuming you have access to the required woodworking tools, or know a kind friend who does, I'd suggest looking at the ones designed by the late Terry Cain. The improvement is quite remarkable & have a nice WAF if finished properly.
Listed below is a link to the project.
http://www.melhuish.org/audio/DIYOT3.html
Cheers,
Bish
Listed below is a link to the project.
http://www.melhuish.org/audio/DIYOT3.html
Cheers,
Bish