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H4

H4 ; Brown S. G. Ltd.; (ID = 164830) Speaker-P H4 ; Brown S. G. Ltd.; (ID = 992389) Speaker-P
H4 ; Brown S. G. Ltd.; (ID = 164837) Speaker-P H4 ; Brown S. G. Ltd.; (ID = 164832) Speaker-P
H4 ; Brown S. G. Ltd.; (ID = 164833) Speaker-P H4 ; Brown S. G. Ltd.; (ID = 164834) Speaker-P
H4 ; Brown S. G. Ltd.; (ID = 164835) Speaker-P H4 ; Brown S. G. Ltd.; (ID = 164838) Speaker-P
H4 ; Brown S. G. Ltd.; (ID = 598750) Speaker-P H4 ; Brown S. G. Ltd.; (ID = 1229246) Speaker-P
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H4 ; Brown S. G. Ltd.; (ID = 164830) Speaker-P
Brown S. G. Ltd.;: H4 [Speaker-P] ID = 164830 640x480
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For model H4, Brown S. G. Ltd.; London:
Brown H4
 
Country:  Great Britain (UK)
Manufacturer / Brand:  Brown S. G. Ltd.; London
Year: 1925 Category: Loudspeaker, headphone or earphone
Details
Loudspeaker Horn
Power out
from Radiomuseum.org Model: H4 - Brown S. G. Ltd.; London
Material Metal case
Dimensions (WHD) 175 x 260 x 200 mm / 6.9 x 10.2 x 7.9 inch
Notes Hauteur: 25.5 cm. In "Le Guide du Coll.Biraud/Foster 2" Jahrgang 1926. HP électromagnétique.
This model was introduced in 1925 and was the last in the range to be produced by S.G.Brown.
It was the smallest and measured 10.5 inches high with a flare diameter of 7 inches.
It was advertised as 'a genuine Brown at the price of a pair of phones'. The cost was 1 pound 10 shillings.
This horn used the same driver and metal base as the earlier models but was only available in 2000 ohms impedance.
It was produced in black and brown enamelled finish.
Reference see:
Horn Loudspeakers by S.G.Brown, Ian L.Sanders, Radio Bygones No.35, June/July 1995, page 13-17.
Net weight (2.2 lb = 1 kg) 1.160 kg / 2 lb 8.9 oz (2.555 lb)
Collectors' prices  
Mentioned in Radio! Radio!
Literature/Schematics (1) Le Guide du Collectionneur TSF Biraud/Foster, Vol. II (page 419)

Model page created by Bernd P. Kieck. See "Data change" for further contributors.



All listed radios etc. from Brown S. G. Ltd.; London
Here you find 48 models, 37 with images and 3 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.




  
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