My SX-28 and Homebrew Reproduction Speaker


by Jim K8IH





A few years back I purchased a restored Hallicrafters SX-28 receiver.


While doing research on the history of this beautiful radio I came upon a site describing the companion R-12 bass reflex speaker. Inspiration for my project started here:


Visit R-12 Inspiration Page!

Visit SX-28 Information Page!

My cabinet closely matched the dimensions of the original and is mostly ¾ in plywood with the exception of the sides made of ¾ inch MDF in order to achieve the radius on the waterfall edge without exposing the core material of plywood. The cabinet is painted in a matte gunmetal gray similar to the original.



  • Hallicrafters SX-28
  • This is the original Hallicrafters speaker
  • Here is the plywood assembly
  • This is my Reproduction