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Re: Nakamichi CM-300

Subject: Re: Nakamichi CM-300
From: "Max" oatcruncher
Date: Tue Aug 20, 2013 6:13 am ((PDT))
Hi Umashankar,
I was hoping to hear from you. What I need to know is, do I have to maintai=
n the wiring of the original lead (pin 2 to tip, pin 1 and 3 jumpered toget=
her to shield), to use with my LS-10 direct?
Cheers
Max

--- In  umashankar <> wrote:
>
> nakamichi cm 300 is a transformer output balanced microphone. it is 9 vol=
t battery powered, but phantom voltages will not damage it.
> =A0
> umashankar
>
> From: "" <>
> To: 
> Sent: Tuesday, August 20, 2013 3:50 PM
> Subject: [Nature Recordists] Re: Nakamichi CM-300
>
>
> Max,
>
> I don't know this mic and haven't used an LS-10 so I'll be brief.
>
> The mic has an unbalanced output which means one wire is connected to
> ground. Make sure you don't have phantom power on as this will put 48V
> across the input as it is no longer "phantom". Phantom power is 48V appli=
ed
> equally to both input wires with respect to ground.
>
> To make the mic "balanced" or "floating" which would isolate the signal
> wires from ground, you would need a mic transformer in circuit. Balanced=

> means equal plus and minus inputs and floating means these inputs have no=

> connection with ground.
>
> One way to check it out would be to wire the mic with loose lesds or
> whatever into the live inputs without a ground connection. You will get h=
um
> and interference but it may give a clue to whether a transcformer would
> help.
>
> David Brinicombe
>
>
>
> ------------------------------------
>
> "While a picture is worth a thousand words, a
> sound is worth a thousand pictures." R. Murray Schafer via Bernie Krause.
>
> Yahoo! Groups Links
>
>
>
>








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