| Year | 1925 |
| Date | 06-Aug |
| Volume | 53 |
| Issue | 1,267 |
| Page | 163 |
| Category | Workshop Topics |
| Part | |
| Title | Making a Loud speaker in a Small Workshop |
| Author | "The Magnet" |
| Notes | Some detail of components and methods of machining, sectional elevation and plan, completed made from castings described, assembly |