Question about Panasonic Proline AG-DVC7 Mini DV Digital Camcorder

3 Answers

My external mic wont work! Please help.

Im a week away from beginning production on my new project, and I cant get my external mic to work with my Panasonic ag-dvc7. The mic is xlr, so I bought an adapter to go with it. The mic works with other cameras, so I know it works, but it just wont work on mine. Can someone please help me, if anyone has ever had this same problem. It would be greatly appreciated, thank you! -Michael

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  • 2 more comments 
  • Michael DuBois Jun 07, 2007

    I didnt rate anything, I just clicked that I needed another solution. I never rated anything. And yes, I said that the mic works with other cameras. So yes, it does work. Thank you.

  • Michael DuBois Jun 07, 2007

    Alright, thank you techman. Yeah I figured I would probably have to bring it in some place, but I figured it was worth a shot to ask people. Thank you very much man.

  • Michael DuBois Jun 09, 2007

    Thank you so much for being so kind and so helpful. Here, Ill post the links to the kind of mic and adapter I have...

    mic- http://www.azdencorp.com/shop/customer/p...

    (and I just read, that IS phantom powered...)

    and the adapter- http://www.studio1productions.com/xlr-bp...

    again, thank you so much. You have no idea how happy this made me to come on here and find someone ready to fully help me. Thank you. Talk to you soon!

  • Michael DuBois Jun 12, 2007

    Thank you so much for being so kind and so helpful. Here, Ill post the links to the kind of mic and adapter I have...

    mic- http://www.azdencorp.com/shop/customer/p...

    (and I just read, that IS phantom powered...)

    and the adapter- http://www.studio1productions.com/xlr-bp...

    again, thank you so much. You have no idea how happy this made me to come on here and find someone ready to fully help me. Thank you. Talk to you soon!

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Hello, I'll try to help you by begining with a small description of the microphone connector you have. An XLR connector is a balanced type of signal connector. It means that it has 3 pins, one is for ground connection, on for signal positive and one for negative signal. Your camera woun't need those pins, instead it needs only a ground connection and a signal pin (2 pins). You need to use an adapter but this doesn't solve all the problem. You should either tell me the model of your microphone because I need to check if it's a Phantom powered microphone (it means one of the pins of it's XLR connector carries a 48 volts connection that is needed to power on some components inside it's casing). Phantom powered capacitor microphones also uses XLR connectors so we need to make shure if the microphone is compatible with the camera. Just tell me what's written on the microphone and I will check for you. If it's not compatible (if it's an XLR phantom powered microphone) you will need to search for another one because these microphones are made for using in live sound mixing aplications (concerts, studio recordings etc). If it's compatible, I will then instruct you on how to adjust the adapter in order to have it work. Please don't try to connect it any more untill we clear this out because an incompatible microphone can damage the camera's microphone amplifier circuit. Also please don't try to connect another adapter meanwhile. I'll reply to you as quick as possible. Thanks for understanding and patience.

Posted on Jun 09, 2007

  • Motoi  Bogdan
    Motoi Bogdan Jun 09, 2007

    Also, please note that some profesional cameras have an Phantom Powered output for these microphones and altrough the microphone works for them your camera may use a different output. I will check this also. Also if the microphone uses symetric signal carriers (balanced type of microphone) it can also mean you need to make some modifications on the cable in order to get it working with this camera. Don't worry however, we will get to a simple answer in no time.

  • Motoi  Bogdan
    Motoi Bogdan Jun 13, 2007

    Hello again,

    It appears that both links aren't working, I've tried clicking them but both result in server errors. However the problem is pretty obvious. Since your microphone uses phantom power to work, your camera should have had a 48Volt special connector in order to power on the microphone. In this case you woundn't have needed an adapter because all phantom powered mic's use XLR connectors. In your case the adapter you have isn't suited for the purpose needed since it's a simple mechanical swich to make the devices cables connect to one another.Therefore it can't produce the 48volts needed to power on the microphone. Please note however that there are 2 main types of XLR connections. One involves phantom power (your microphone for example) and another involves balanced signal wires (used for some audio devices such as mixers). Both connectors look the same but their porpose is different. it's a common confusion that may appear.
    In your situation the things aren't that good. The microphone is simply not compatible with the camera. Since the camera doesn't have an external +48 Volts source, this microphone woun't work, whatever adapter may be used. Furthermore it can damage the camera microphone audio amplifier circuit because of low impedances these mic's have when unpowered. I don't recomand you to try to swich on the camera when using this microphone. The solution to this problem would be another microphone. Most full sized microphones will come with a standard audio jack and those that come in this way don't require Phantom Power. It's the simplest way to recognise them in future. Sorry for the inconveniences and the delays this microphone may have caused to you. Hope these advices help in the future and if you have further questions please feel free to ask.

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Ilovefilm3, Yoo never said if the internal mic worked or not. Oh and by the way, if you rate this thread bad , we cannot help you if we have another idea, as you cannot change the rating once it is done, so if you really want assistance, please dont be so quick to rate this thread till we are done asking you the questions about your problem. Thanks

Posted on Jun 07, 2007

  • Larry  Dillon
    Larry Dillon Jun 07, 2007

    Then your problem hs something to do with the XLR adaptor, or the mack jack has a broken connection on the inside, or there is a bad coupling capacitor from the mic jack to the preamp board. Good Luck, PS I would take this unit into be checked out by a pro, as there is nothing more you can do my friend.

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If the mic is working on other camera's, what about the adaptor ? If there is a possiblity of checking the mic and the adaptor together on other equipment ? Use another mic with the same plug as the camera, ie. PC microphone (you can even test by using an earphone, the earphone can be used as mic) If it works then the XLR mic with adaptor is the problem. If ther other mic (used for testing) also did not work then the microphone jack (socket) in the camera is defective or the gain setting of the camera is set to minimum.

Posted on Jun 06, 2007

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