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RE: First Watt B4 arrives today - setup questions for Tymp I-Ds

Measuring an unknown input impedance is easily done. I have a little box (with a variable resistor) I constructed many years ago to accomplish this. :)
http://www.sengpielaudio.com/calculator-InputOutputImpedance.htm

The power amplifier output impedance is irrelevant since it will be a small fraction of the speaker load.

Cheers,

Dave.



Edits: 04/21/17

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