1940-1950s vintage gigantic huge outdoor public address BBC UM30 horn speaker complete of compression driver, still perfectly working. The main purpouse for this beast buid like a tank was for pubblic address and army / military usage, or also school, live and concerts in stadium or squares, etc. Wheather-proof rain-proof aluminum housing, painted in light gray. Still in excellent conditions despite its own age; just a pair of dents on the transducer and a few little scuffs on the paint, and a split at that black rubber ring that cover the surround edge. A little red pice of tape on the driver was to recall or recognize immediately at a glance which one is the positive-polarity connection terminal.
Brand: BBC by Fernando Borrani
Model type: UM 30 made in Florence, Italy Features written on the label; 30 watts and 16 ohms
Speaker diameter: 25-1/4” or 64 centimeters
Height counting also the mountin bracket if flipped in vertical position: 24-3/4” or 63 centimeters
Height without counting the mounting bracket: 24-3/8” or 62 centimeters
Height of the horn (or cone) only without count neither the bracket nor the transducer 18" or 46 centimeters
Height of the compression driver alone - counting also its own thread and bolt as well - 6-1/4" or 16 centimeters
Compression driver diameter 5" or 13 centimeters
Weight of the compression driver alone: 9.25 lbs or 4.2 kilograms
Total weight: 19.06 lbs or 8.65 kilograms
...This monster has been tested also by plugging it in my SABA Hi-Fi Pack C 3100 Stereo (look at it among my items) and it can also play records and music pretty well.
It has been tested and works fine. it reads 10.9 ohms on my meter.
I tried also to plug it in my SABA Hi-Fi Pack C 3100 Stereo (look for it among my listings) to see if can reproduce music as well, and yes, it does! However its own real purpouse is not for home use but to broadcast sound in outdoor locations