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Old 1st April 2013, 12:15 AM   #1
diyAudio Member
Join Date: Mar 2013
Default Identify record player and valve

Hi everyone,
I'm hoping someone may be able to help me identify this record player that was given to me or send me in the right direction. The player is in a bakelite (brown) case with all badges etc. missing. The cartridge is an English BSR, but I'm unsure if it's a BSR table. The 7 pin mini tube is missing with no schematic or id of what a replacement would be. The speaker is labelled manafactured by 'EMI' Sydney, Australia. I have attached pics to help.

Thanks guys,
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File Type: jpg DSCF6609.jpg (345.4 KB, 67 views)
File Type: jpg DSCF6612.jpg (267.8 KB, 66 views)
File Type: jpg DSCF6613.jpg (156.7 KB, 63 views)
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Old 1st April 2013, 12:56 AM   #2
VaNarn is offline VaNarn  Australia
diyAudio Member
Join Date: Dec 2010
Location: Ivanhoe
The most likely valve would be a 6AQ5 and the turntable might be a "Monarch" if not a B.S.R. unit
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Old 1st April 2013, 01:28 AM   #3
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Join Date: Apr 2004
Location: Monroe Township, NJ
Beyond question, that unit employs a crystal cartridge whose O/P is several volts. A HIGH tracking force is necessary. I would not play anything on that device, except 78 RPM disks of little or no value.

The stack of fins is a selenium rectifier, which is a ticking, toxic, time bomb. It must be replaced by an appropriate number of modern, silicon, diodes.

All electrolytic capacitors, especially the clamp mounted multi-section part, have literally dried out, with the passage of time. Replacement is essential.

While crystal carts. do produce volts of O/P, I doubt the drive needed for a 6AQ5 is present. IMO, the 50C5 or 1 of its lower heater voltage "equivalents" seems more likely. In any event, all of us are guessing.
Eli D.
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Old 1st April 2013, 01:39 AM   #4
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Join Date: Mar 2013
Many thanks for the quick reply and info gents.

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