Re: home stereo impedance matching

[John Clement <clement@HAL-PC.ORG>]

> Have some fun and measure the impedance of your spks.  The easiest
> method is to insert a rheostat in series and adjust 'till the EMF drop
> across the resistor equals that of the speaker.

This might be the average impedance, but speakers are or were rated at the
minimum impedance.  The impedance can be highly dependent on the frequency,
so I don't think that this is actually a good measurement.  I am ignoring
the fact that speakers are also not entirely resistive.

I also think that his receiver does not have different taps for impedance
matching, but it rather has a specified range.  I have not seen different
impedance outputs on transistor electronics, but it was standard on tube
electronics because of the output transformer.

John M. Clement
Houston, TX