Phantom Power

[Janet]

Hi There,
I have 3 condenser mics hooked into channels that have 48V toggled on for phantom power, but still no sound is coming out. Can anyone help?

[Mike C]

That could really be lots of things!

First, what is the mixer and are you using a stage box with it?

Do you get sound if you use a non phantom powered mic?

Are those channels assigned to the main mix?

By chance are those channels assigned to a DCA group or audio group and that group master
is turned down or muted?

[Janet]

I Have the QU-24 directly plugged into our bose speakers from the 2TRK out. That is how the old director had the system for use with our snakes and individual mics. Is that wrong?

[Bear]

Are the going thru a regular snake or a D-snake ?

[Mike C]

Could you post some pictures of what the mics are plugging into at the stage, the back of mixer and a picture of the routing menu screen on the mixer with one of the condenser mic channels selected and also a picture of the pre amp screen on the mixer.

Do you get sound from other mic inputs and music sources?
Do you have another mic to try and a cable?

[Brian]

Are you getting levels/metering on that channel? That would indicate that the mic is really working, but there is a routing issue somewhere in the desk that is preventing the mic’s audio from reaching an output.

If you are not getting levels/metering on that channel, then it points to either a mic failure, a phantom power failure, or something is set/routed incorrectly with the inputs and the correct signal is not making it into the desk.

[Janet]

I suppose something routed incorrectly would be my guess, but I don’t have time to trouble shoot this anymore than what I’ve spent.

Sometimes I feel like I need a 2nd Masters degree to work this board. I finally just got out an old one that I will use instead.

Thank you for your attempt at trying to help.

[Brian]

Janet – I know how you feel and you are not alone! The various routing options that modern digital consoles offer now can be really helpful, but it also introduces a lot more places where you can make a mistake!

[Mike C]

Check in your area for someone who could come in for some training and or help with the production. Looking at your profile it looks like the mixer is at a school. Maybe look up who installed the system, though sometimes the installers may not be the best choice!

[Author]

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