[Elecraft] Balanced Mic to Unbalanced Connection Follow Up Question

[Gil Drynan]

The PR-781 does not like the DC bias supplies from many newer ham radios.
A capacitor in series with one side of the balanced line. Heil offers a
specialized cable for three pin XLR mike to the mike jack on front of
different brands of transceivers. Contains the capacitor as required.
Works for me.

Gil  W7GIL




> All:
>
> I have a follow-up question regarding balanced mics and unbalanced
> connections. I'm about to connect a balanced dynamic microphone (Heil
> PR-781) to the rear mic input on my K3S which has a 1/8" unbalanced mono
> connection.
>
> One recommendation was to connect XLR pin #2 mic (+) to the tip of the
> 1/8" jack and pin #3 mic (-) to the sleeve. In this case, pin #1 or
> ground is left floating with no connection. A 1/8" mono jack was
> recommended for this setup.
>
> The other recommendation was to connect pin #2 to the tip and pin #1 and
> #3 to the sleeve of the 1/8" jack. It was also suggested that I can use
> either a 1/8" mono or a stereo TRS jack in both cases.
>
> So which is correct?
>
> Tony -K2MO
>
>
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