There is one other thing you might consider. The phantom supply is provided through series resistors on pins 2 & 3, usually 1kΩ to 10KΩ each pin. You could put shunt resistors across each pin from 2-1 and from 3-1 to reduce the phantom voltage. Be sure they are perfectly matched, equal value resistors. You could put them on a microphone cord or on a little pigtail adapter. I wouldn't go smaller than 1KΩ to reduce the effect of line impedance but I don't think you'll have to go that low. If the phantom supply source impedance is 4.7KΩ. then a 4.7KΩ resistor in shunt will cut phantom voltage in half. You can always connect the resistors across pins 1-3 and 2-3 and measure the voltage across those pins to make sure they're between 10v and 30v before connecting the microphone.

• Neutrik 3382 microphone

I will try to speak to the Neutrik people, although the unit is no longer catalogued. Perhaps they will still know the answer.

Ed Form

I'm Ed Form, based in Suffolk in the UK, and I've been around the audio business for some while. In a past life I was technical director of Tannoy, and, before that, technical director of Celestion. I'm not really connected to the audio business these days, except as an occasional consultant, but I haven't lost my love of all things audio.

I hope to see you all in the forum on a regular basis, now that I've found it.

Comparative measurements indicate a sensitivity gain of just over 1dB, and I can't see any change in frequency response at all.