Measuring Impedance for Dummies!
Mar 29, 2006 at 3:56 AM Thread Starter Post #1 of 4

replytoken

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Is there somebody who could assit two non-engineering members who are trying to measure the output impedance of a headphone amp/preamp? Can this be done with a simple multi-meter? If so, where do the two leads from the meter get connected to the amp? Does the amp need to have a signal passing through it for the measurement? Inquiring minds want to know!
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Any help would be greatly appreciated.
 
Mar 29, 2006 at 5:57 AM Post #2 of 4

mkmelt

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Essentially what you want to do is take the same measurement used to determine the source impedance of an amplifier. This in turn can be used to determine the damping factor of the amplifier, however it is only correct for the specific frequency used in the test.

The following post describes what you would need (test equipment) and need to do (procedure):

http://db.audioasylum.com/cgi/m.mpl?...actor&session=
 
Mar 29, 2006 at 7:13 AM Post #4 of 4

nikongod

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you can probably calculate/find that using some or another software tool on the various computer sound-cards. chances are good that its available free somewhere. im not too familiar with them though.

it may require that you build a "load box," but thats not a dificult task if your familiar with diy.
 

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