420T or 10E/33B ?????????

exurbia · 27th September 2008, 11:05 AM

Hi,
Does anyone know what these are ? They don't have a CV (common valve) number.
any info appreciated.

exurbia · 28th September 2008, 01:35 AM

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.

27th September 2008, 11:05 AM	#1
exurbia diyAudio Member Join Date: Jul 2002 Location: Perth	420T or 10E/33B ????????? Hi, Does anyone know what these are ? They don't have a CV (common valve) number. any info appreciated.

28th September 2008, 01:35 AM	#2
exurbia diyAudio Member Join Date: Jul 2002 Location: Perth	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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