Grado SR80e Closed back mod/im completly crazy

Discussion in 'Audio Science' started by spwath, Dec 3, 2016.

  1. spwath

    spwath Collegiate hijinks master

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    So I have no idea what I'm doing, but decided to make my grado sr80e's closed back.
    Long story short, I put some acoustic dampening stuff in their, one cottonball in each earcup, quarter modded pads, and wrapped the pads in electrical tape.
    Not the best isolation, but better than before, and still not bad.
    Will write up more in the morning, but heres the measurements after a few hours of work.
    Unmodded and modded, just FR, will get others tomorrow.
    Not bad, just need to better match channels.
    [​IMG]
     
  2. spwath

    spwath Collegiate hijinks master

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    Added some leather for style and to cover the bad scent of the tape.
    [​IMG]
     
  3. cskippy

    cskippy Creamy warmpoo

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    OMG it's so ghetto looking! I approve. Doesn't matter what it looks like, it's how it sounds that matters.
     
  4. spwath

    spwath Collegiate hijinks master

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    Actually, since adding the leather, it's not sounding too good. I guess it wasn't fully closed before. But I'm working on it.
    But I seriously have no idea what I'm doing, so I'm just experimenting with putting different materials inside based on leftovers from my t50rp mod.
     
  5. cskippy

    cskippy Creamy warmpoo

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    I think somewhere in between the two measurements would be pretty good. Semi closed back? Trial and error are the only ways to find what works and what doesn't. What works for one headphone doesn't necessarily work for another.
     
  6. spwath

    spwath Collegiate hijinks master

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    yup, ill just be doing more trial and error this weekend.
     
  7. stratocaster

    stratocaster Friend

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    If you want to deal with the hump below 1kHz, you have to remove the leather and apply some damping behind the driver instead.
     
  8. spwath

    spwath Collegiate hijinks master

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    there is dampening. 3 layers of felt, cotton, and a layer of that noise dampening stuff used in t50rp mod
     
  9. stratocaster

    stratocaster Friend

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    Try using a ring of coffee filter paper (over the driver vents) and have some foam disk press the coffee filter paper tightly against the driver back.
     
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