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Re: Re: Minidisc Mic Input

Subject: Re: Re: Minidisc Mic Input
From: Klas Strandberg <>
Date: Sat, 21 Aug 2004 22:46:56 +0200
Yes, the PRO4PIP is a 10 mm electret mono mic in a parabol, connected to
one plug in power channel just as usual, then a small capacitor leading the=

AC signal (only) to the other channel via a "too small" capacitor, thereby=

limiting low frequencies.
Then you get two mono recordings, one "full range" the other base limited.

It is, as far as I understand, the only simple way to make a base filter
with plug in power. The current available isn't enough for a low-noise
transistor filter. I have though of trying a transformer input one way or
the other, but never had the time to develop it.

When one starts to think of really carefully designed voltage step-up
circuits etc, - then the whole point with Plug In Power gets lost - the low=

cost and simplicity


At 20:38 2004-08-21, you wrote:
>Klas, you wrote,
> >The Telinga PRO4PIP normally has a 33nF condensor from one channel to th=
> >other, thereby limiting the base response.
> >However, with the Sharp MT190, the 33nF has no effect at all, but needs =
> >be replaced by a 10 nF condensor, or smaller.
>  From one channel to the other? I don't understand.
>-Dan Dugan
>"Microphones are not ears,
>Loudspeakers are not birds,
>A listening room is not nature."
>Klas Strandberg
>Yahoo! Groups Links

Telinga Microphones, Botarbo,
S-748 96 Tobo, Sweden.
Phone & fax int + 295 310 01


"Microphones are not ears,
Loudspeakers are not birds,
A listening room is not nature."
Klas Strandberg
Yahoo! Groups Links

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