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Re: long cable runs with electret microphones

Subject: Re: long cable runs with electret microphones
From: "Jonas Gruska" mrqwa
Date: Wed Apr 1, 2015 10:25 am ((PDT))
I am considering this one at the moment. I have made things with it
before and it is very rugged for having only 3mm diameter. The
capacitance and resistance specs are slightly better then 2697... And
the price is also very friendly: 1.06 euros/meter.
http://katalog.cordial.eu/media/produkte/bulk%20cables/CMK209/CMK%20209.pdf

On 1 Apr 2015, at 5:28, Dan Dugan  [naturerecordists]
wrote:

> I=E2=80=99ve been using long unbalanced cables for my =E2=80=9Clight syst=
em=E2=80=9D for
> backpacking for several years. My mics are Telinga Clip-Ons. I use
> miniature coaxial cable and an 80' 2-channel snake that I made out of
> Mogami 2697, each conductor carrying one channel. I=E2=80=99m sure I get=

> some HF rolloff from the cable capacitance (92 pF/ft) and the rather
> high source impedance of the electrets (2-3 kohms). Sounds good but I
> should measure it. I=E2=80=99m going to experiment with Belden 1808A, a
> flexible dual coaxial cable that=E2=80=99s only 17.3 pF/ft.
>
> I use mini-xlrs on all my mics and cables for flexibility and more
> reliability than 3.5 mm plugs. Only at the recorder end do I have a
> Y-adaptor to 3.5 mm.
>
> Never a problem with interference in the field, as long as my phone is
> off.
>
> -Dan


=E2=9C=BA =E2=9C=BA =E2=9C=BA
http://jonasgru.sk




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