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Old 9th Dec 2008, 6:52 pm   #6
hmv1944
Tetrode
 
Join Date: May 2006
Location: Norwich, Norfolk, UK.
Posts: 71
Default Re: Sound Sales PX4 Amplifier

Thanks everyone,
Yes, that large cathode resisitor for the output valves should be 470R and not 47R. (Just another case of misreading the decimal point- will I never learn?) I will add an amended schematic diagram. Will take another look at voltages and see what I can do. Is it safe to keep the output valves as they are and run the amp even if one is starting to fail?
Alan.
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