[DCameronMauch]

Does anyone know what the equivalent circuit model for regular headphones would look like? If it makes any difference, I am considering the AKG K701s. They are 62 ohms. Also the cable. Want to check with circuit simulations to verify general loop stability. Thanks.

 

[jcx]

http://www6.head-fi.org/forums/showthread.php?t=78369

still searching?

didn't find:

http://www4.head-fi.org/forums/showthread.php?t=170869

why not measure audio frequency with soundcard and current sense resistor

for cable you can measure C pretty easily, exact L depends on geometry and good inductance bridges aren't too common, but the math is easily found if you can measure the dimensions - wire dia, seperation

my 1st comment 2 yrs ago still stands - for amp stability Cload is the main player, and estimated cable C can easily be lumped at the amp output - the headphone coil Z is unlikely to matter as much at hopefully near MHz loop gain intercepts

 

[DCameronMauch]

Thanks for the pointers. I remembered I had asked this question a while ago but didn't get any responses. The second link was very usefull. I am using roughly 10m cables. So I am guessing roughly 1.5nF lump capacitance.