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Thread: Phantom Power Mic on Sony Z1

  1. #1

    Default Phantom Power Mic on Sony Z1

    Hello,

    I am a complete newbie on this matter, and cannot get my head round this phantom power thing, so bear with me please.

    I have a Sony Z1 and want a, budget, unidirectional XLR tie clip microphone for it.

    To this end I have purchased a: Smartwireless Cardioid Lapel Microphone with mini XLR (the spec is below), and a miniXLR/XLR adaptor, this is designed to connect to a UHF radio belt pack. The suppler could would not/could confirm if it would work using my scenario. Never the less I thought it was worth a 30, refundable, punt anyway.

    It does not work on my Z1 with or without the phantom power switched on. Could someone please explain to me, in words of two syllable or less, why?

    The mic spec is:
    Omni-directional lapel microphone : S1007
    Frequency response : 30Hz to 20kHz
    Sensitivity : -42dBV/Pa
    Connector : Mini XLR
    Dimensions : 8mm diameter x 18mm length
    Cable length : 1.2m
    Accessories : Supplied with microphone tie clip

    Cheers, Guy.

  2. #2
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    Default

    Wrong type of power.

    Phantom power, as its name suggests is a way of using the microphone cable to supply power against the flow of the sound signal. It does this utilising the phase of the electricity which is then sorted out at the microphone.

    Your cheapo mic needs a dc supply.

  3. #3

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    Quote Originally Posted by Rembrandt Rob View Post
    Your cheapo mic needs a dc supply.
    Well yes, I understand that much.
    So why doesn't the phantom power from the Sony Z1 XLR port do the job?
    Or do I need a power module as well?

  4. #4

    Default

    I little more information as to regards to my using a budget mic.
    I have read many time that if you use a cheap mic, get it close. The theory being cheap mic close, is better than expensive far away.

  5. #5
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    Have you just bought the microphone or the beltpack too? Are you simply just plugging the mic into the Z1? It's not a powered mic of any kind as far as I can see.

  6. #6
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    To use another analogy, think of Phantom like AC. Your mic needs DC. Two completely different forms of power.

    So yes, you will need some way of delivering power to your mic. These sort of mics normally use 7.2v delivered from the radio pack or directly from consumer camcorders.

    Edit: There are units available which convert 48v phantom to 7.2v dc, I have Sennheiser MZA900P units but they are expensive at around the 150 mark.
    Last edited by Rembrandt Rob; 08-11-2011 at 11:54 AM.

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    Quote Originally Posted by guyrws View Post
    ..The theory being cheap mic close, is better than expensive far away.
    No. With cheap (and it is a false economy as I can state from personal experience) close can result in popping and clipping. Far away is just tinny. You'll have to find the optimum distance yourself in each scenario by monitoring on headphones.

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  9. #9

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    Quote Originally Posted by Andy Lockwood View Post
    Have you just bought the microphone or the beltpack too? Are you simply just plugging the mic into the Z1? It's not a powered mic of any kind as far as I can see.
    I have not purchased the belt pack, just the microphone.

  10. #10

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    Quote Originally Posted by Andy Lockwood View Post
    Yes.

    I have also purchased this yesterday:
    STAGE LINE MINI XLR TO STANDARD XLR ADAPTOR WITH PHANTOM POWER SUPPLY EMA-1 232120 Mini XLR to standard XLR adaptor with phantom power supply EMA-1 Stage Line Mini XLR to standard XLR adaptor with phantom power supply EMA-1 232120 - Stagebeat - 232120 23.2120 ema1 ema-1 ema 1 a
    It should be delivered tomorrow. Will that do the job?

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