420T or 10E/33B ????????? - diyAudio
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Old 27th September 2008, 11:05 AM   #1
exurbia is offline exurbia  Australia
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Question 420T or 10E/33B ?????????

Hi,
Does anyone know what these are ? They don't have a CV (common valve) number.
any info appreciated.
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Old 28th September 2008, 01:35 AM   #2
exurbia is offline exurbia  Australia
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Default not 12E1

I have had suggested that these are an 12E1 by another forum user. i'm not too sure about that as none of the 12E1/CV345 numbers cross reference.
Maybe i should just get one and try to work out what it is ? Any sggestions as how to do this will be welcome.
I have an odd number of them so, if one or two die during examination it's no big prob.
Bit like Guantanamo really.
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