R/E/P > Klaus Heyne's Mic Lab Stickies

Mic/Pre impedance "matching"- What Are The Rules?

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klaus:
Very easy. Bridge the pads either with a fat drop of nicely flowing solder that will flow to both solder points (visible under each resistor) or remove the resistors and solder a small piece of wire across the two solder points

Hermetech Mastering:

--- Quote from: klaus on February 12, 2021, 02:06:16 AM ---Very easy. Bridge the pads either with a fat drop of nicely flowing solder that will flow to both solder points (visible under each resistor) or remove the resistors and solder a small piece of wire across the two solder points

--- End quote ---

Thanks Klaus. If I posted pics of my KM84s internals, would you be able to tell me what the ohm output strapping was, and if the pads had already been bridged?

aget342:
Any updates on this?

Derek Samuel Reese:
I have a u67 and was considering buying a tree audio branch II tube mic preamp, it has three different input impedance’s,
37.5
150
And 600.
Are all of these impedance’s safe to use with my u67 ?

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