Hello,
I have Paramount 300B monoblocks I built back in 2010 and currently use with Sophia Electric Princess 300B Mesh Plate tubes.
Recently I decided to check my hum balance, as per page 64 of the manual. The manual says the reading should be 0.8 - 2.0 mV - but I couldn't get mine below 2.5 - 3.0 mV. Should this be a concern and what can I do to fix it? I am using these 300B tubes since 2011 - is this time to change them?
Thank you
I have Paramount 300B monoblocks I built back in 2010 and currently use with Sophia Electric Princess 300B Mesh Plate tubes.
Recently I decided to check my hum balance, as per page 64 of the manual. The manual says the reading should be 0.8 - 2.0 mV - but I couldn't get mine below 2.5 - 3.0 mV. Should this be a concern and what can I do to fix it? I am using these 300B tubes since 2011 - is this time to change them?
Thank you