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Silver-Marshall 728 "Q" 1932 Silver-Marshall
Incorporated, 6401 W. 65th Street, Chicago, Illinois,
USA
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A photo of the cabinet will be posted
as soon as warmer weather allows for photographing the
set outside.
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This radio was one of the largest Silver-Marshall offered for
1932. It comprises of a model 728 receiver fitted with a
Jensen model D-1 speaker (Midrange/Tweeter) and dual Jensen model
D-9 bass speakers (Woofers). The field coils of the dual
woofer speakers are powered by a separate power supply that also
serves as a L/C crossover for all three speakers. I acquired
this radio, in September 2000, from an auction in Cicero,
Indiana. |
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Tube Line Up: Receiver 58...1st. Detector /
Mixer 56...AM Oscillator 56...SW Oscillator 56... SW
Frequency Driver 58...1st. I.F. Amplifier 58...2nd. I.F.
Amplifier 56... 2nd. Detector 56...AVC 45...Audio
Driver 45 x 2...Push - Pull Audio
Output 83...Rectifier Speaker Power
Supply/Crossover |
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Dimensions: Height...47 inches Width...26
inches Depth...14.5 |
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Frequency
Range: BC Band (White)...550 kHz to 1500 kHz P Band
(Yellow)...1.6 MHz to 4.6 MHz SW1 Band (Green)...3.6 MHz to 9.3
MHz SW2 Band (Red)...9.5 MHz to 25 MHz I.F. Frequency...175
kHz |
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Power
Source: AC...110 Volts |
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The schematic and information of this radio can be found at
the Nostalgia Air web site by clicking on the link
below. |
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Schematic
(Triple Speaker) |
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This is an artists drawing of the manufacturing plant as it
looked when it was constructed in 1928-1929. Silver-Marshall
Inc. occupied this building from 1929 until it went bankrupt in
1933. This illustration is featured on the company's "General
Parts Catalog" for April of 1929. An aerial view of this
building can be seen using Google Earth when the following address
is used: 6429 65th St, Chicago, IL 60638-5101 |
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This web page was last
updated: February 3, 2006
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