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RE: Recommended bias for KT120's...

68.96.121.205

In Reply to: RE: Recommended bias for KT120's... posted by tube Tom on August 04, 2023 at 15:22:10

There is surprisingly little info ( Make sure the bias is between 80 and 100 ma after 60 seconds or so, and is between 90 and 110 ma after 20 minutes or more of operation. ) and no picture of layout or even mention of rectifier tube on Quicksilver site. I did find some other info from someone who sold a pair & said they could take KT90's & KT120's but no KT150's. They even have 100ma printed by the tubes "DOE!". So yes they will take KT120's "and barely break a sweat" as the seller said.

Follow Ups:

RE: Recommended bias for KT120's... - 6bq5 12:57:40 08/07/23 (0)
That info is not from Quicksilver - the manufacturer.

If you have the amp I think you have,
you are risking the output transformers if you try to run the KT-120s

Also, please remember: Bias for a tube is a combination of a specific voltage (or range) at a specific current - or range.

100 mA at 250 volts is VERY different from 130 mA at 400 volts!
Happy Listening
RE: Recommended bias for KT120's... - sony6060 14:48:21 08/06/23 (0)
What is your amps plate and screen voltage?

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