What is the correct bias voltage for a ST70 with Roy Mottram's VTA octal drive upgrade? Is it .45VDC or .40VDC? I am running Genalex KT77s
Thanks.
Thanks.
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The voltage depends on what cathode resistors are installed. Original st70 has 15.6 ohmbreading wrote:What is the correct bias voltage for a ST70 with Roy Mottram's VTA octal drive upgrade? Is it .45VDC or .40VDC? I am running Genalex KT77s
Thanks.
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