Here are the plans from the Lowther America website, which were donated by KK Yeo. KK made the cabinets to my specifications, and with numerous conversations with my by telephone and email. He shows the "TWL mod", and how to make it on that PDF file.
Go to this link
http://www.lowther-america.com/
Scroll down about halfway to where it says "Voigt Pipe" plans, and click on the link. Its a PDF file so it will take a while to load.
Here is a link to a photo of one of the finished speakers.
http://cgim.audiogon.com/i/vs/i/f/1100956236.jpg
Go to this link
http://www.lowther-america.com/
Scroll down about halfway to where it says "Voigt Pipe" plans, and click on the link. Its a PDF file so it will take a while to load.
Here is a link to a photo of one of the finished speakers.
http://cgim.audiogon.com/i/vs/i/f/1100956236.jpg