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:
- posted
16 years ago
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:
What's normally on the end of the lead rather than a 1/4" jack ?
Graham
Try Switchcraft:
-- JF
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.
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.
Of course since the Microtrack provides phantom power, the Shure RPM 628 will bridge the gap.
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
-- "C'est un Nagra. C'est suisse, et tres, tres precis."
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...
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?
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
Norm Strong
Is this it?
Ebay Item number: 120162286447
-- Posted via a free Usenet account from http://www.teranews.com
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.
That seller doesn't post to the UK unfortunately.
Graham
This appears to show the pinout of your microphone and the wiring of the interface (page 10) .....
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.
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