resistor mic splitter

The resistors should be 1/4W metal film varieties. The ground lift switch is really only required if you are connecting to two different consoles which have their earth connection at different parts of the system. It is used to prevent ground loops from forming. The "RFI filter" is a HF AC coupling of the grounds, and the capacitor should be a 50V monolithic ceramic type.

I'm building the splitter precisely for the situation You mention, to split the mic signal of a singer to the house P.A. and to a recorder with its own mic pres

thanx a great lot for your reply

hope this thread proves to be useful to more people

Thanks, andrep. Espcecially for providing a diagram.

I love pictures!

Especially since I can't read!

question:

if I want to have more outputs in series after the 600ohm resistors, will it work because the microphone is still just seeing the 600ohms or should the design be changed to accomodate the extra outputs?

If phantom power is required, make sure only one console is supplying the phantom power and make sure the other console can handle the DC voltage OK.

andrep said:

question:

if I want to have more outputs in series after the 600ohm resistors, will it work because the microphone is still just seeing the 600ohms or should the design be changed to accomodate the extra outputs?

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I believe the resistors will have to change. I'd have to get out some very old books to be sure, but I'm pretty sure you have to match impedance from input to output.