Hi guys,
After trying to convert my K+H preamp module into a decent mic preamp, I have realised that it would be best to make a new preamp using the Beyer transformer from the original module.
Samuel Groner very kindly modified a mic pre design which he thought would be suitable for my needs.
Would anyone with better experience than myself be able to look over the schematic to confirm that there are no major errors? It looks ok to me, but I want to make sure before I order all of the components.
I think the Beyer transformer has the following specifications;
Ratio: 1:7
Primary DC resistance: 50 Ohms
Secondary DC resistance: 3.45 KOhms
Transformed impedance: 10 KOhms
Primary open-circuit inductance: 6H @ 50Hz
Primary open-circuit impedance: 1.885 KOhm @ 50Hz
Rg: 200 Ohms
Here is the schematic:
Thanks,
Roddy
After trying to convert my K+H preamp module into a decent mic preamp, I have realised that it would be best to make a new preamp using the Beyer transformer from the original module.
Samuel Groner very kindly modified a mic pre design which he thought would be suitable for my needs.
Would anyone with better experience than myself be able to look over the schematic to confirm that there are no major errors? It looks ok to me, but I want to make sure before I order all of the components.
I think the Beyer transformer has the following specifications;
Ratio: 1:7
Primary DC resistance: 50 Ohms
Secondary DC resistance: 3.45 KOhms
Transformed impedance: 10 KOhms
Primary open-circuit inductance: 6H @ 50Hz
Primary open-circuit impedance: 1.885 KOhm @ 50Hz
Rg: 200 Ohms
Here is the schematic:
Thanks,
Roddy