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Thread: Has anyone created a corrective IR for the ELX112p?

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    Member Goldtop's Avatar
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    Has anyone created a corrective IR for the ELX112p?

    If you have, I would love to try it out and see how much it helps.
    Thanks!

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    Senior Member symphx's Avatar
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    what is a corrective IR?
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    LMO
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    Quote Originally Posted by Goldtop View Post
    If you have, I would love to try it out and see how much it helps.
    Thanks!
    Can you make a regular IR from the ELX112p?
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    Member Goldtop's Avatar
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    I don't have a mic preamp available right now. It's on my shopping list. I also only have an SM57. I presume I would need to use a reference mic to get better results.
    I'm willing to try to make the IR, since it's not coaxial would I need to make several or should I place the mic back from the cabinet?
    I saw the tutorial by cobhc999 and was feeling this is a bit over my head.
    Thanks LMO.

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    Member Goldtop's Avatar
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    Symphx, a corrective IR would help flatten out the response of the speaker.

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    Senior Member Funeral's Avatar
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    I wouldn't mind trying one as well.
    Maybe one day.
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  7. #7
    LMO
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    Quote Originally Posted by Goldtop View Post
    I don't have a mic preamp available right now. It's on my shopping list. I also only have an SM57. I presume I would need to use a reference mic to get better results.
    A flatter mic would be better, but you can work with an SM57 if that is what you have available. An SM57 is pretty flat from 200 to around 3000 Hz, which is the most important part of the frequency range. There are things you can do to reduce the high frequency boost as well.
    Quote Originally Posted by Goldtop View Post
    I'm willing to try to make the IR, since it's not coaxial would I need to make several or should I place the mic back from the cabinet?
    You'll need to place the mic at least a meter away, aimed at the center point between the speakers.
    Quote Originally Posted by Goldtop View Post
    I saw the tutorial by cobhc999 and was feeling this is a bit over my head.
    Thanks LMO.
    That was using REW, and I've had problems getting good results with that method, although I probably should give it another try. To start with you just need to make an IR; that will show us the magnitude response that we need to correct for. Perhaps someone has already made one...?
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    Member Goldtop's Avatar
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    Ok, I'm gonna make an IR using the SM57. I still need to go out and get a mic preamp. Seems like a good excuse to visit my local music store!

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    LMO
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    If you have the capability, meaning DAW software installed, it would be useful if you would record sweep data directly as well (assuming you plan to use the built-in IR function in the Axe-Fx II). I can walk you through the steps if needed. Basically, you play a test sweep and record the result, then run both the test sweep and the result through deconvolution to get an IR. The advantage to doing it manually is that you can adjust the gain of the result before deconvolution to compensate for the response of the SM57. There are other options for dealing with that as well.
    jon likes this.
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    Member Goldtop's Avatar
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    I used my SM57 with the preamp section of my Roland AC-60. I know this is not the best equipment but I still think there can be some improvement made to my FR using it.

    Unfortunately I do not have any DAW yet. I'm just a gigging kind of player and haven't delved into the world of recording and engineering. Am I pretty much screwed without this?
    Last edited by Goldtop; Feb-4-2012 at 03:28 PM. Reason: removed bad file

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