[LAU] DIY messurement-mic

I have a Panasonic W61 capsul here, famous for having flat frquency response. used for example in the Behringer C8000 (don't remember the correct model number)

in fact it came in a cheap mic I bought only to have the capsul: http://www.leson.com.br/v1/produtos/microfones/index.php?pro_id=133&cat_id=14
problem is its an unbalanced circuit using a 1,5V baterie.

I want to make it work balanced and with phantom power

there is a famous project of a pre-amp circuit called P93:
http://s1.postimage.org/5m4edvc6m/p93_f6.gif

but since I have a preamp I'm asking myself if it wouldn't be sufficiant to use a t-power circuit. what would be the disatvantage? sure, it would come with less gain to the pre, but would that mean more/too-much noise?

I have to say that i am no electrition, I have to find some-one to make this for me, so I want to keep it as simple and cheap as possible.

I don't know if any of you guys can help me.

Thanks
Fabio

T-POWER:

pre mic

2 o---+---------------100uF------+-------o 2 +
      | |
3 o---)---+-----------100uF------)---+---o 3 -
      | | | |
      1 1 | |
      0 0 | |
      K K | |
      | | | |
      +---+---1K5--+----+--2K2---+ |
      | | | |
     47u 10u Z 2
      | | 9 K
      | | V 2
      | | | |
 1 o--+------------+----+------------+ I have to add an english-spell-checker to my email-program lol.....excuse all the errors

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Received on Thu Dec 23 08:15:02 2010