In-line XLR high pass -distortion?

  • Thread starter Thread starter mixsit
  • Start date Start date
mixsit said:
http://shure.com/stellent/groups/public/@gms_gmi_web_ug/documents/web_resource/us_pro_a15hp_ug.pdf

This thing lists distortion '2.5% maximum' which seems like a lot for a simple filter task. Would I stay cleaner using other means to low cut?
Click to expand...

It's not a simple filter task. Since it's passive, and has to pass DC for phantom power, the basic capacitor approach won't work. So they must have used an inductor (which their graph seems to indicate with its peak). You'd need a fairly large value inductor for the job, and to cram it into a space that small, perhaps they made some compromise in the inductor design that causes the distortion.

It would be much easier in an active circuit, but that would require phantom power.
 
Thank you, that is exactly the kind of insight I was loking for. :)
 
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