seeking audio adaptor mini xlr - jack

Hi, I'm looking for an adaptor that will connect my Shure lavalier mike (with mini xlr plug) to a quarter inch jack socket on an m-audio microtrack. pictures here:

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I've tried studiospares, shure, m-audio, no luck. I'll make an adpator if I have to but I'd rather buy a ready made one. Thanks for any help.

Reply to
tg
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What's normally on the end of the lead rather than a 1/4" jack ?

Graham

Reply to
Eeyore

Try Switchcraft:

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JF
Reply to
John Fields

You will need a custom-made adapter that will take the phantom power supplied by the MicroTrack and convert it to the voltage required by the microphone. AFAIK, this is not available as a commercial item, although is it not rocket-surgery.

Reply to
Richard Crowley

I'm not sure that a passive solution is possible. Offhand, the Microtrack probably supplies only a volt or two of bias, while the Shure lavs require about 12 volts.

Reply to
Arny Krueger

Of course since the Microtrack provides phantom power, the Shure RPM 628 will bridge the gap.

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Reply to
Arny Krueger

mike --------------------+---------------]|---------- to preamp | 10 uF unbalanced in \ / \ 2.2K ohms | | --- - 9V battery | gnd --------------------+---------------------------- gnd

I don't offhand know which polarity the battery needs to be. I believe with the Shure mikes they need to have positive power.

Before doing this, first make sure the 1/4" input has enough gain in the first place to deal with a mike level signal.

--scott

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"C'est un Nagra.  C'est suisse, et tres, tres precis."
Reply to
Scott Dorsey

You have ~30V available out of the 1/4-inch connectors on the MT2496. You need to establish exactly what is the pinout and power requirements for your microphone.

The required circuit is *SOMETHING LIKE* this one...

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which converts P48 phantom to 12V. A similar circuit can be used to produce whatever voltage your mic wants, and to route the power, signal, gnd, etc. as needed.

NOTE THAT THE CIRCUIT CITED IS *NOT* EXACTLY WHAT YOU NEED. Without the exact details of your mic, a precise answer is not possible. Do you have the complete model number of the microphone? Do you have the wiring diagram and/or pinout of the mic connector?

Reply to
Richard Crowley

Use an ordinary XLR-XLR mike cable, and put an adapter from female XLR to male 1/4" TRS plug. The latter can be obtained from

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as part number 27-4140.

Norm Strong

Reply to
<normanstrong

Is this it?

Ebay Item number: 120162286447

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Reply to
Tobiah

That would be the right connector if it were male. (Obvious lesbian joke left to your imagination. :-)

But note that the interface between the OP's microphone and the 1/4" mic inputs on the MT2496 takes more than a simple adapter/cable.

Reply to
Richard Crowley

That seller doesn't post to the UK unfortunately.

Graham

Reply to
Eeyore

This appears to show the pinout of your microphone and the wiring of the interface (page 10) .....

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If I am reading it correctly, your mic wants...

Pin 1 = ground Pin 2 = power (+6VDC? from a casual glance at the circuit) Pin 3 = Audio out of mic Pin 4 = Pin 3 [dunno why?]

You can interface it to the 1/4-inch mic input jacks of the MT2496 with a variation on Rick Chinn's circuit I cited previously. You would need to change the zener diode to limit to 6 volts, and change the wiring where it goes to the microphone head. It seems unlikely that you could fit the required components into either connector shell.

Reply to
Richard Crowley

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