Re: Sennheiser MKH question

[Dan Dugan <>]

derek holzer wrote:

>Spec says:
>
>Symmetrically ungrounded output without repeater

I suspect this refers to what I call "source impedance balanced." I
understand that's how Neumann mics are wired. It's what I do with the
outputs on my products.

It means that pin 2 is driven with the signal, and pin 3 has a
passive network that matches the source impedance of the signal
channel. It turns out that this arrangement has all the
noise-rejecting qualities of a symmetrically-driven balanced output,
without the extra amplifier and the attendant complications when the
user wants to wire it unbalanced.

The only downside is if somebody tries to run it unbalanced out of
pin 3. No signal.

-Dan Dugan


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