Clean the flux and debris off with isopropyl alcohol the ?test. ?If you want to reseal it you can use clear nail polish. ?
Next question: phantom power is used to generate the internal voltage used by the mic electronics and a bias generator. The bias generator creates the capsule bias voltage which is usually 60VDC ?in run my mics at 80V ?rode goes higher. It is only present when the mic is powered on. That voltage charges the mic capsule, which is a capacitor or “condenser” in 1930’s speak. When sound vibrates the gold plated diaphragm the capacitance changes and that results in a vintage change in the capsule. Which is what we want.?
Best Regards,
Jules Ryckebusch?
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On Oct 24, 2024, at 07:48, Heinz via groups.io <heinz.hartfiel@...> wrote:
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On Thu, Oct 24, 2024 at 02:55 PM, @jp8 wrote:
can you take a picture that zooms in on the high-Z area around the red wire?
Many thanks for pointing me to the area and the detailed instructions to clean it up!
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I will give it a try to remove the discolored coating and flux. It will take some time because I have to order the acrylic coating first. Any tips on which coating I should use?
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Rode uses a high polarization voltage of 100V or more?! That's interesting. I have a beginner question. Is polarization performed every time the microphone is switched on or every time phantom power is applied respectively? Without polarization the capsule doesn't work, right? What could be the reason that polarization takes time? Shouldn't the polarization be kept? I'm asking because I noticed a different behavior today.
If I don't use the microphone for several hours and then turn it on, the NT1-A needs 3 minutes to warm up before it starts working. If I then unplug the XLR cable and plug it back in after three minutes, no warm-up phase is necessary. The NT1-a is immediately ready for use. Apart from the fact that after a longer period of operation, there will be interruptions again. Which could indicate a problem between the capsule and the circuit board?! I'm just guessing. Many thanks, Jan!
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