Sunday, 9 April 2017

Electro Harmonix Knockout Attack Equalizer

"The Knockout is a powerful two-filter combination that can make your Les Paul sound like a Strat and your Strat sound like a Tele. Its secret...the Knockout has a 7 pole filter for sculpting the low end of your mids and a 6 pole filter to shape the top end of the mids. This provides incredible tone shaping. Use after distortion to bring out the heavy weight punch of the metal masters. The Knockout is also truly amazing on Bass."
Original FSB thread and schematic available here.



12 comments:

  1. Hi!
    What is a CLR resistor and "LED+"?
    I did not find it in the schematic...

    Thanks!

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    Replies
    1. CLR stands for current limiting resistor and is just a resistor making sure that your status LED gets the right amount of current. There's lots of online calculators to get the numbers for whatever color your using, but if you're unsure 2200 ohm usually works well. LED+ is just the positive side of your status LED(usually the longer leg), the negative going to the switch as in the offboard guide that you can find in the tabs on this site.

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    2. Thank you Voidvessel!
      This one was a bit different from other vero, in that matter.
      Thanks!

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  2. Curious about this. May give it a go

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  3. yesterday I saw the layout ehx equalizer by johnk.
    nice layout Alex. I want to try this

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  4. Could an LT1054 be used in place of the 7660s?

    ReplyDelete
    Replies
    1. Not on this layout.
      If you give me your email address I'll send you a modified layout for it.

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  5. This comment has been removed by the author.

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  6. i use bc558. cool my humbucker sound like single pickup.. and pot bass so powerfull . damn great must try on bass. tq Alex

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  7. Will it work with a MAX1044 as replacement for the 7660S?

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  8. Anyone know what hFE on the BC309: A, B,or C?

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