thanks bimbla,
Actually I need only 60 clients, but I can add an
OP amp to every client. Is it ok to add them (60 pieces)
parallely to a good mic cable, and feed it to the PC's
line in?
I can't really make matricies, because they can
move the clients for ex.: 6x10 or 8x8 etc.
Does it need separate GND line? Can I connect it to
the digital GND?
How large amplification do I need? (1-1.5Vpp?)
(I also need a small mic preamp schematic,
I am not really good in analog tech)
thank you very much
for the help,
Zed