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Re: Telinga clip-ons?

Subject: Re: Telinga clip-ons?
From: "Mike Rooke" picnet2
Date: Sat Oct 22, 2011 8:53 am ((PDT))

Ive measured the capsule from 0.1v to 48v (way over voltage) and also with =
excessive current but thats only during experiments with the FET and when I=
 had hundreds of them. (btw Im - or was...)

Providing you keep the capsule current at around 300 to 400uA you should be=

PIP operation is easier with the LS10.

Most of this lot is using the EM17x capsules, except the Monte Gordo record=
ing and synth-i-fications.


--- In  Eric Vogel <> wrote:
> Hi folks - I'm interested in this discussion as I am in the process of
> building a pair of mics with EM-172 capsules for my LS-10.
> The data sheet on the EM-172 is implies they should run at five volts
> with 3k9 load resistor. And the frogloggers site where I got the
> capsules includes this statement
>     /The EM172 ECM must be operated at or near its nominal operating
>     voltage. Operation at too low a /
>     /voltage will produce excessive self-noise. /
> I am building a battery box with a modestly regulated supply to meet
> that spec.
> It sounds like you are running these with PIP and if so, have you
> measured the current flow through the capsule? I'd be curious to what
> you found.
> Thanks,
> Eric
> On 10/22/2011 5:21 AM, Mike Rooke wrote:
> >
> >
> > "so we compare noise floors equally (if thats possible) I'd say they (t=
> > EM172s) are nearly identical with a lower noise floor above 15 Khz."
> > Higher noise rather than lower, the shure capsules tail off the primo
> > is flat in the same region. Thus with the shure capsule the noise tone
> > is warm sounding and the primo more prominent where our ears are the
> > most sensitive.
> >
> > -Mike
> >
> > --
> >

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