Re: Shunt Resistance For Mics

Ian Bell <ruffrecords@xxxxxxxxx> wrote:
Scott Dorsey wrote:
Ian Bell <ruffrecords@xxxxxxxxx> wrote:
Scott Dorsey wrote:
Ian Bell <ruffrecords@xxxxxxxxx> wrote:
Yes but we are not talking about the difference between unloaded and
loaded but between a 2K load and a 680R load. In both case I bet the Q
is below 1.
Didn't measure it directly, but I sure saw a difference in ringing on
a scope. If you want to measure it, I'd be curious what you come up with.
So when you say 'saw a difference in ringing on the scope' what exactly
were the test conditions?

Little baby IEC chamber, tone burst source, 600 and 10K loads into
a Neff differential amp, old Tek 565 scope. Don't recall the burst
frequency but it was probably 5KC or so.

So this was a burst of how many cycles of 5KHz and precisely what did
you see on the scope?

Probably around a .1 second burst. What I saw on the scope was a nice
ringing on the trailing edge of the waveform, and that ringing was not at
the excitation frequency.

Again, it's been quite a few years since I did any of this.... I did some
basic testing when Paul Stamler's article first came out. A quick
qualitative test made it clear to me that something was going on which
was consistent with Paul's article and that's all I really cared about at
the time. If that's not enough for you, I urge you to make your own
measurements.
--scott


--
"C'est un Nagra. C'est suisse, et tres, tres precis."
.

Relevant Pages

  • Re: Shunt Resistance For Mics
    ... loaded but between a 2K load and a 680R load. ... So when you say 'saw a difference in ringing on the scope' what exactly were the test conditions? ... Little baby IEC chamber, tone burst source, 600 and 10K loads into ...
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  • Re: Shunt Resistance For Mics
    ... loaded but between a 2K load and a 680R load. ... So when you say 'saw a difference in ringing on the scope' what exactly ... Little baby IEC chamber, tone burst source, 600 and 10K loads into ...
    (rec.audio.pro)
  • Re: Shunt Resistance For Mics
    ... loaded but between a 2K load and a 680R load. ... So when you say 'saw a difference in ringing on the scope' what exactly were the test conditions? ... Little baby IEC chamber, tone burst source, 600 and 10K loads into ...
    (rec.audio.pro)
  • Re: Shunt Resistance For Mics
    ... mic cord a couple of years ago, and have used it with my SM58. ... loaded but between a 2K load and a 680R load. ... So when you say 'saw a difference in ringing on the scope' what exactly ...
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  • Re: Shunt Resistance For Mics
    ... loaded but between a 2K load and a 680R load. ... So when you say 'saw a difference in ringing on the scope' what exactly were the test conditions? ... So this was a burst of how many cycles of 5KHz and precisely what did you see on the scope? ...
    (rec.audio.pro)