"One-Der" horn loudspeaker - UK Vintage Radio Repair and Restoration Discussion Forum

Phil G4SPZ · 14th Dec 2011, 10:59 pm

I'm trying to identify the maker and approximate age of this brown horn loudspeaker. It is similar in size and shape to the 1926 Graves horn speaker shown in Figure 863 on page 210 of "Radio! Radio!" third edition.

As well as the name "One-Der" (presumably pronounced "wonder") there is a transfer on the base unit giving three patent numbers: 239331, 243431, 243432, but I've had no luck searching for these on the web.

Any help would be appreciated.

For what it's worth, this unit came to me with no innards. It now houses a modern 2.5" moving coil speaker and sounds remarkably good!

Thanks,

14th Dec 2011, 10:59 pm	#1
Phil G4SPZ Dekatron Join Date: Apr 2005 Location: Bewdley, Worcestershire, UK. Posts: 4,748	"One-Der" horn loudspeaker I'm trying to identify the maker and approximate age of this brown horn loudspeaker. It is similar in size and shape to the 1926 Graves horn speaker shown in Figure 863 on page 210 of "Radio! Radio!" third edition. As well as the name "One-Der" (presumably pronounced "wonder") there is a transfer on the base unit giving three patent numbers: 239331, 243431, 243432, but I've had no luck searching for these on the web. Any help would be appreciated. For what it's worth, this unit came to me with no innards. It now houses a modern 2.5" moving coil speaker and sounds remarkably good! Thanks, __________________ Phil Optimist [n]: One who is not in possession of the full facts