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Author Topic: C-1 Condensor Mic/Flex5000  (Read 583 times)
KC3BBI
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Posts: 66




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« on: September 17, 2017, 02:30:00 PM »

I have just learned that the microphone I ordered on ebay was not simply plug and play on my Flex 5000 . I bought a condenser mic without realizing that i need power to the mic before it will work. How do I add power to the mic short of buying a separate mixer? Do I need to return the mic and start over with a different mic?
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K0BT
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Posts: 351




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« Reply #1 on: September 17, 2017, 08:00:22 PM »

Connect the negative side of the condenser element to mic ground, pin 7. Connect one side of both a 4700 ohm resistor and a .47 uF capacitor to the hot side of the element.  Connect the other side of the resistor to +5V on pin 2. Connect the other side of the cap to the mic audio in on pin 8.  Experiment with the cap value or just try what's sitting around. Values from .1 to .47 uF should work, so see what sounds best.
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KC3BBI
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Posts: 66




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« Reply #2 on: September 18, 2017, 04:30:14 PM »

Thank you K0BT. I understand that it needs 48 volts though. A friend just found something. He showed me a condenser mic set with the power supply for phantom voltage. I found this to work for me after I get the new condenser mic.
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K0BT
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Posts: 351




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« Reply #3 on: September 18, 2017, 04:46:47 PM »

on phantom powered mics, another approach is to reduce the value of the internal resistor(s) inside the mic housing. You'd then want to remove the XLR connector to prevent it from being connected to phantom power by accident.

I'm glad you found a solution that works.  That's all that counts.  Smiley

73,
Bob
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K5TED
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Posts: 78




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« Reply #4 on: September 18, 2017, 07:05:35 PM »

Another method would be to use a ART or Behringer, etc., inexpensive mic preamp with line out, and take it to the balanced line input on the rear Flex panel.

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