designmaster
Member
Hi all,
in a short I will build the following MIC preamp as on part of a larger project including A/D conversion along with ADAT interface and so on.
But lets begin with the input stage first.
It is nothing new but if I can make it better than it will be worth to do it.
The schematic can be found here http://groupdiy.twin-x.com/albums/userpics/10057/preamp_v09.pdf
To lower noise would it make sense to add a second transistor in parallel to Q1 and Q2?
I also saw some schematic on which the transistors where directly connected to the input of the OPAMP. Is there a benefit doing so. In my opinion this will disturb the a little bit the input stage, or?
Suggestions welcome
DW
in a short I will build the following MIC preamp as on part of a larger project including A/D conversion along with ADAT interface and so on.
But lets begin with the input stage first.
It is nothing new but if I can make it better than it will be worth to do it.
The schematic can be found here http://groupdiy.twin-x.com/albums/userpics/10057/preamp_v09.pdf
To lower noise would it make sense to add a second transistor in parallel to Q1 and Q2?
I also saw some schematic on which the transistors where directly connected to the input of the OPAMP. Is there a benefit doing so. In my opinion this will disturb the a little bit the input stage, or?
Suggestions welcome
DW