Measurement Setups - Post Your Rig!

Discussion in 'Measurement Systems and Standards' started by Luckbad, Oct 5, 2015.

  1. Maxx134

    Maxx134 Friend

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    I will try the latex body paint.
    :D
     

  2. spwath

    spwath Friend

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    I have a question.
    What are you atempting to acomplish with these rigs?
    Like what is the basic principles you are using to design them?
    I might make a better one than my cardboard box now, but im wondering, what is the rig trying to do, why are they generaly tubes with a bunch of foam in them?
     
  3. JBoogie

    JBoogie Rando

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    [​IMG]
    My first measurement rig :D. Cheap & easy mic from ojneg ==> Behringer umc404-hd ==> REW. Been playing with my beyer dt770 while learning REW and measurement meanings. below are some measurements of stock and tweaked dt770
    [​IMG]
    [​IMG]
    [​IMG]
     
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  4. JBoogie

    JBoogie Rando

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    The foam is to minimize interference from other noises like resonance off the plate. They use specific foam to get a better seal as well, simulates the seal a headphone makes in real world use. I think the tube is just a matter of convenience, fits pads well on the ends and does not interfere headband when mounting
     
  5. JBoogie

    JBoogie Rando

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    Curious if you ever tried the latex? I dont know about body paint but other paint types do maintain a malleable rubber feel(like #7) after they cure. Might be able to apply multiple layers to a chunk of semi firm foam and get a decent seal.
     
    Last edited: Aug 19, 2016
  6. Maxx134

    Maxx134 Friend

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    I have not tried the latex because my initial decision of trying USB microphones changes my setup decisions especially the size of the unit .

    Not to be funny, but the surface of Some nom-latex "skin" condoms may be a better surface material...
    Just a thought.
    :rolleyes:
     
  7. spwath

    spwath Friend

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    Experimenting with my measurement set up, this seems to give me accurate results.
    Leather with an ear sized piece of felt, with a smaller felt circle on top. This will give a nice seal if the headphones go all the way around the ear, but if they have stupidly small ear cut outs, it will not make a full seal with the leather.
    Still need to get a better mic than my receiver mic, need to get something for phantom power for the sbaf recomended mic im building
    [​IMG]
     
  8. spwath

    spwath Friend

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    Done with my rig.

    Made the mic as shown in the thread, now I just need phantom power.
    Uses leather and felt coupler, same as shown in above pose
    Back with XLR connector
    [​IMG]

    In use:
    [​IMG]
     
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  9. spwath

    spwath Friend

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    Serious design flaw with my design. The vinyl picks up any slight vibrations, even a little breeze, and transmits it to the mic. Im going to have to redesign it....
     
  10. philipmorgan

    philipmorgan Member of the month

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    Doh! Sure did look cool tho! :)
     
  11. spwath

    spwath Friend

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    Yeah. But if I blow on the vinyl, with headphones over the mic, its jumps from 30db to 50db. So yeah...
    I guess ill have to use a more normal, less cool looking material. Probably just use wood or something.
     
  12. OJneg

    OJneg The Most Insufferable

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    For anyone looking into the Primo EM172 mics, I attempted to order a pair from frogloggers and my ordered has remained "Awaiting Fulfillment" for over 2 weeks now. Do not recommend them, it seems they are asleep at the wheel.
     
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  13. spwath

    spwath Friend

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    Well it probably takes a long time for the frogs to chop down the trees and transport them. I cant image a frog being able to carry much weight.
     
  14. spwath

    spwath Friend

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    Ill keep half the vinyl. Finaly got around to revising my design, record for non mid'ed earcup, wood with my same leather/"ear" seems to give me nice, accurate measurements.
    Ill be sure to measure everything I get my hands on.
    I appoligize for bad image quality, my phone is broken, had to use bad camera I had.
    [​IMG]


    And measurements of my Grados, and my T50's I tried to make sound like my grados. Not too bad.
    Mabey better than the grados.
    [​IMG]
     
  15. MrTie

    MrTie Friend

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    Though I should share my ghetto'fab audyssey mic coupler.

    smallcoupler.jpg

    Trying to fix the stock Monoprice M1060, Stock is red here.

    SvMScale.jpg


    WFstock.jpg
    Stock WF

    WFmod.jpg
    Mod waterfall
     
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  16. Marvey

    Marvey Loves sex and records

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    ortho wall...
     
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  17. MrTie

    MrTie Friend

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    Yeah it's basically a cheap Chinese clone of the lcd3 pre fazor driver more or less, ortho wall out da ass. The spike preceding it stock was painful though.
     

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