Electromagnetic
loudspeaker, made by Alfred Graham & Company in London.
Black spun aluminium
flare with black cast metal neck, nickel-plated base and
2,000 ohm drive unit.
By turning the knurled screw the distance between the magnet
and the diaphragm can be changed.
The
AR110 is 120 ohms.
The
original price was £ 2:10:0.
Data
Serial
number:
D33368
DC resistance:
2000 Ohms
Diameter:
25 cm
Made in 1924
Purchased in 2005
Sold in 2023
What was
broadcast in 1924?
Listen to "The
Ogo Pogo" by The Romaine Dance Orchestra,
recorded on November 12, 1924
Detail
Advertisement in
Popular Wireless, October 25, 1924
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