When to use Mic Power +48V

[Jason.Teets]

I know this is entirely a novice question, but you is what you is I suppose as the old southern saying goes. So, when is it proper to use the On-Camera Mic Power +48V? Is that only for Mics that don't have phantom power? Does having this switched on or off affect the sound of a mic input that does not need it on? In other words, if I have this "on" for the same channel I'm plugging a wireless feed into, what exactly is happening, or will happen?

Thanks!

[DavidPartington]

You will typically use Phantom Power with condensor mics.   These mics need power of some sort.   I have several Rode NTG-2 mics that can be powered from the camera (phantom power) or can take a 1.5v battery to power them when I use other recording devices that don't provide the phantom power options.

Other types of mics (e.g. Dynamic) don't need phantom power.

So, it really depends on the type of mic you are using.

[HankCastello]

Good reply!  But I would like to add a caution - never, ever turn on your phantom power unless you are certain that the mic you are using, requires it.  That would never apply to phantom power from a camera when using wireless, because you are connecting a receiver, not a condenser mic.

[Jason.Teets]

Thanks for the clarification. What would happen if you turn on the phantom power to a condenser mic that doesn't require it? What's the main reason to be cautious of this... will it damage the mic?

[HankCastello]

[will it damage the mic?]

Anytime you connect 48v to an electronic device that isn't made for it, you can expect damage.

[ampsonic]

If you are using a balanced connector, (IE: XLR), you won't damage a dynamic mic with phantom. If it's unbalanced, (1/4"), it would not be good.

Edit:

I see you are talking about wiring a wireless receiver, you do NOT want to send +48v to that.