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Question on impedance tabs vs. loudspeaker impedance

Posted by jwitzsch (A) on September 16, 2004 at 02:26:06

Hi
I do know, what the different impedance tabs on the transformers of my triode-amp mean, and I do know, that the "lower" the output-tab, the more current the amp is able to deliver to the speaker.

Still, there is on question left unanswered for me: what is the difference, when I choose the 2 ohm, 4 ohm or 8 ohm Tab for an 8 ohm speaker? Or in other words: what are the pros and cons to choose or deliberately NOT choose the exact match of impedances between the transformer output and the loudspeakers nominal impedance? What kind of effects could the different "matches" provide electrically and sonically?

Thanks for your answers
Joerg

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