DIY Phantom Power (was: fostex fr-2le high frequency noise)

["Curt Olson" flipov411]

Klas Strandberg  wrote:

> It's easy Curt - connect 4 or five 9v batteries in series. Connect
> minus to ground.
> Then connect two 6,8k resistors per channel from the +pole of the
> battery to pin 2 and 3 of the XLR's.
>
> The resistors need to be 2% matched if you are going to connect a
> dynamic microphone or a microphone with an output transformer. If the
> resistors differ, like one is + 5% and the other -5%, then current
> will go through the coil / transformer winding and - worst case -
> cause damage.

Thank you Klas,

Just to clarify...

Do you mean 6.8k resistors? (You put a comma in there.)

And are the two resistors per channel series or parallel?

Curt