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Thread: MXL 990 Modding Tell Me Everything!

  1. #1
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    MXL 990 Modding Tell Me Everything!

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    Well... I have a MXL 990 laying around with no use, ive seen some modded mics and i would like to know what can i do to make the mic better or different.
    i havent mod any mic yet but im good with the soldering gun.

    thanks

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    The first thing to do is take out the two innermost layers of mesh. There is a huge difference is made in that alone.

    If your brave, you can try to remove the little grill on the capsule. I didn't as it's too risky.

    Some have changed the shape of the brass metal ring around the capsule to further reduce reflections. Some have also added a little foam to the bottom of the capsule chamber to still further reduce reflections ( I haven't tried either of these yet, so I can't speak to any difference).

    ***EDITED FOR ACCURACY***
    Replace C3, C4, and C13 with better caps (subtle differences).
    for C3 & C4 try a Panasonic Metal Film cap .22uF rated for 50v (found mine at DigiKey)
    for C13 try a Xicon Polystyrene film cap .001uF rated for 50v (Found mine at Mouser)
    ***EDITED FOR ACCURACY***

    To reduce body resonances, band the body below the mesh with thick rubber bands to get rid of a little ringiness. Like the ones that band broccoli together at the grocery store.

    Outside a capsule change and massive circuit over hauls, that's pretty much the best I know you can do.

    It's well worth the time. The mic is, dare I say, really good after the mods. especially for the price.

    Good luck
    Last edited by qbert1; 07-06-2009 at 00:08.

  3. #3
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    Quote Originally Posted by qbert1 View Post
    The first thing to do is take out the two innermost layers of mesh. There is a huge difference is made in that alone.

    If your brave, you can try to remove the little grill on the capsule. I didn't as it's too risky.

    Some have changed the shape of the brass metal ring around the capsule to further reduce reflections. Some have also added a little foam to the bottom of the capsule chamber to still further reduce reflections ( I haven't tried either of these yet, so I can't speak to any difference).

    Replace C3, C4, and C13 with better caps (subtle differences).
    for C3 & C4 try a Xicon Polystyrene film cap .001uF rated for 50v (Found mine at Mouser)
    for C13 try a Panasonic Metal Film cap .22uF rated for 50v (found mine at DigiKey)

    To reduce body resonances, band the body below the mesh with thick rubber bands to get rid of a little ringiness. Like the ones that band broccoli together at the grocery store.

    Outside a capsule change and massive circuit over hauls, that's pretty much the best I know you can do.

    It's well worth the time. The mic is, dare I say, really good after the mods. especially for the price.

    Good luck
    I think you have your cap values mixed up. C3 and C4 are .22 and C13 is .001

    Or am I mistaken?
    Live Clean and Play Dirty

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    Yep you're right. I got them swapped in the previous post. I'll switch it so no one gets screwed up.

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    Quote Originally Posted by qbert1 View Post
    Yep you're right. I got them swapped in the previous post. I'll switch it so no one gets screwed up.
    lol it's an easy thing to do.
    Live Clean and Play Dirty

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