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 in plywood with the exception of the sides made of 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