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Microphones What Mic are they using?

Discussion in 'Sound, Music, and Intercom' started by dvsDave, Mar 1, 2013.

  1. MNicolai

    MNicolai Well-Known Member Fight Leukemia

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    May want to check for a bad cable. I've seen instances where two conductors in a mic cable short against each other and cause very interesting things to happen, requiring lots more gain and unusual EQ'ing to compensate, albeit poorly, for the shorted signal.
     
  2. FMEng

    FMEng Well-Known Member Fight Leukemia

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    Something is wrong. An SM58 and an e835 should sound fairly similar once the gains are trimmed. There should not be a 14 dB difference in the low mids, where they are both quite smooth. I suspect you have an SM58 which has been damaged to the point that it is ready for retirement or a vacation trip for repair.

    My rule of thumb is if I have to use more than 6 dB of EQ, either I have the wrong mic placement, the wrong mic type for the particular use, or something is broken.
     
    Last edited: Feb 13, 2014
  3. chausman

    chausman Chase Fight Leukemia

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    As far as that specific case, it was a bad channel on that console (which is our old board and hasn't been used in several years). The e835 needed just as much help to sound normal. The 58 did need a fair amount of low end (on a different console) to get similar to the e835s. Which, since it was a middle school (!) jazz choir individually miced, they boys could use all the help they could get.
     
  4. derekleffew

    derekleffew Resident Curmudgeon Senior Team Premium Member

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  5. NewChris

    NewChris Active Member

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    I have a weird one for you guys: I have a Turner Crystal Microphone, Model 260X. It came from a pair of Clevite-Brush headphones. I can't find ANY information about it. Any of you know any thing or have ideas?Here are some photos of the headphones: http://imgur.com/a/rKnMI
    Here are some photos of just the mic:
    IMG_2557.JPG IMG_2558.JPG IMG_2560.JPG
     
  6. FMEng

    FMEng Well-Known Member Fight Leukemia

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    Crystal mics, aka piezoelectric microphones have a very high output impedance. Consequently, they only worked well with a high impedance vacuum tube input stage. As solid state preamps became the norm, crystal mics fell out of favor. The high impedance allows the cable to become quite microphoniic. (Whack the cable and hear a thunk out of the speaker.) It probably has very poor frequency response and an unpleasant amount of harmonic distortion. Crystal mics were mostly used for cheap, consumer tape recorders, things like intercom headsets, and possibly two-way radios. If you want to play with it, try plugging it into a guitar amp.

    This is a close cousin of a piezo pickup for an acoustic guitar. I've heard some good sounding guitar pickups and some that sound as nice as fingernails on blackboard, overly bright and "buzzy." I've always figured the nasty sounding ones were piezos and on the cheap end of the price scale.
     
  7. JD

    JD Well-Known Member

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  8. NikolasR

    NikolasR Member

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    This is probably a stretch, but if anybody has ever been to Gallow Center of the Arts in Modesto, CA do you know what kind of floor mics they use? Wasn't able to find any videos that clearly display them.
     
  9. merseymale

    merseymale New Member

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    image.jpeg image.jpeg Mystery Mic Corner...
     
  10. merseymale

    merseymale New Member

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    Mystery mic..?
    What mic is this? It's a LDC with a hidden HPF button soldered to the PCB!
     

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