Jean Clochet
Well-known member
Hi,
here is a pdf of a phantom-powered buffer/impedance transformer circuit for use with something like posted here:
http://www.groupdiy.com/index.php?topic=43859.340
It allows to use a mic pre for making up the gain from a passive eq. I speced the Jensen transformer but was told the Cinemag is the same but cheaper so, use that one
Fig. 1 is the simplest version.
Fig. 2 has a few more parts to improve linearity and noise a little.
Fig. 3 shows the example of using a Neve output traffo instead of the Cinemag. This version has a switched 12dB pad to put the output signal closer to mic level.
Thanks,
Jean.
here is a pdf of a phantom-powered buffer/impedance transformer circuit for use with something like posted here:
http://www.groupdiy.com/index.php?topic=43859.340
It allows to use a mic pre for making up the gain from a passive eq. I speced the Jensen transformer but was told the Cinemag is the same but cheaper so, use that one
Fig. 1 is the simplest version.
Fig. 2 has a few more parts to improve linearity and noise a little.
Fig. 3 shows the example of using a Neve output traffo instead of the Cinemag. This version has a switched 12dB pad to put the output signal closer to mic level.
Thanks,
Jean.