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Mesa GEQ - Changing the freqency.

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  • #1

    Mesa GEQ - Changing the freqency.

    I have a Mesa DC3 and the GEQ jumps from 2.2k all the way to 6.6k in terms of frequency control. I find 6.6k to be too high to be useful for guitar; most guitar speakers roll off severely after 5k. I'd be happier with that control in the 4.5 to 5k range I think.

    Mesa uses a .033uf cap in series with a .033H inductor to get the 6k value; what should I use to get 5K ish? Can someone hip me to the correct formula to calculate the frequency I want?

    Also, any suggestion on a source for the inductors?

    Thanks!
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  • #2
    The mesa High Eq's are actually about 5k not 6.6k. infact most of the frequecy's are different to what's written on the faceplate.

    You can calculate the frequency of each slider with a resonance calculator (or the resonance formula):

    L/C Resonance Calculator

    Just change the cap rather than trying to source new inductors. caps are much easier to come by.

    (example: changing the cap to 0.047uF will give you 4k.)

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    • #3
      You can also use another online calculator:

      L-C Filter Equations

      In the Sloclone forum someone found a source for those inductors:

      Sloclone Forums • Login

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      • #4
        Thanks Guys! That L-C Calc is great!

        Gainfreak, do you have a link to the specific thread on that forum where someone found a source for those inductors?

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        • #5
          They are from Wilco. you can get samples for free, but they will ask you questions about your company etc. Also they will ask you to pay about $15 shipping. Just do a search for 'wilco' over at sloclone.

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          • #6
            Gainfreak, do you have a link to the specific thread on that forum where someone found a source for those inductors?
            The link is in my previous post but here it is one more time:

            http://sloclone.yesterdaysrevolt.com...hp?f=14&t=2623

            They are from Wilco. you can get samples for free, but they will ask you questions about your company etc. Also they will ask you to pay about $15 shipping. Just do a search for 'wilco' over at sloclone.
            Those are not from WILCO. This is another source. Check out the thread - there's a picture and test results.

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