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Author Topic: Mic/Pre impedance "matching"- What Are The Rules?  (Read 75250 times)

klaus

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Re: Mic/Pre impedance "matching"- What Are The Rules?
« Reply #15 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
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Klaus Heyne
German Masterworks®
www.GermanMasterworks.com

Hermetech Mastering

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Re: Mic/Pre impedance "matching"- What Are The Rules?
« Reply #16 on: June 04, 2021, 05:16:34 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

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

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Re: Mic/Pre impedance "matching"- What Are The Rules?
« Reply #17 on: April 06, 2022, 04:08:03 PM »

Any updates on this?
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Derek Samuel Reese

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Re: Mic/Pre impedance "matching"- What Are The Rules?
« Reply #18 on: October 06, 2023, 09:43:37 AM »

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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