2. amps-preamps
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transformers/output impedance

Hello,
I'm confused, or is it a question accepted that the use of output transformers for tube amplifiers, aims to lower the output impedance of the same, to match with the impedance of the speakers? However, how can a passive device (transformer) influence the output impedance of an active amplifier unit? I say that the output impedance is a characteristic of the amplifying machine, and transformers only optimize the ratio of its ability to deliver current, with the current requirements of the speaker, easily translated by its impedance
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Showing 1 response by clio09

clio09
3,363 posts
 
To be clear, the use of a transformer can indeed reduce the output impedance, but there is a myth that adding loop negative feedback will too. It doesn't. I'll explain that further if anyone asks.

That is what I always felt and have taken a lot of flack for it. I think a little further explanation would help a lot of us Ralph.
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